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Journal of Youth and Adolescence (2019) 48:864–875
https://doi.org/10.1007/s10964-019-01012-3
EMPIRICAL RESEARCH
When Discrimination Hurts: The Longitudinal Impact of
Increases in
Peer Discrimination on Anxiety and Depressive Symptoms in
Mexican-origin Youth
Gabriela Livas Stein 1 ● Laura Castro-Schilo2 ● Alyson M.
Cavanaugh3 ● Yesenia Mejia1 ● N. Keita Christophe1 ●
Richard Robins4
Received: 4 January 2019 / Accepted: 4 March 2019 / Published
online: 16 March 2019
© Springer Science+Business Media, LLC, part of Springer
Nature 2019
Abstract
Life course models of the impact of discrimination on health
and mental health outcomes posit that the pernicious effects of
discrimination may not be immediate, but instead may become
apparent at later stages in development. This study tests
whether peer discrimination changes at particular transition
points (i.e., transition to middle and high school) predict
subsequent internalizing symptoms in Mexican-origin youth. In
a sample of 674 Mexican-origin youth (50% female), this
study used a latent change score framework to model changes in
peer discrimination across time and to test whether changes
in peer discrimination at 7th and 9th grades predicted greater
depressive and anxiety symptoms in 12th grade controlling for
5th grade symptoms. Irrespective of longitudinal changes,
greater peer discrimination in 5th grade predicted greater
depressive and anxiety symptoms in 12th grade. Further,
significant increases in peer discrimination from 7th to 8th
grade
and in 9th to 10th grade uniquely predicted greater anxiety
symptoms in 12th grade. These findings suggest that
longitudinal
research on peer discrimination needs to take into account
unique periods of risk. Future research implications are
discussed.
Keywords Latinx ● Peer discrimination ● Internalizing
Introduction
Experiences of peer racial/ethnic discrimination in late
childhood and adolescence are associated with a host of
negative outcomes, including greater symptoms of
depression (Delgado et al. 2017) and internalizing
problems (Berkel et al. 2010). Longitudinal examinations
of the link between discrimination and internalizing
symptoms typically examine either covarying trajectories
over time (e.g., Bellmore et al. 2012) or how baseline
discrimination influences trajectories of internalizing
symptoms (e.g., Delgado et al. 2017). Although these
approaches provide important information on longitudinal
patterns, they fail to capture whether changes at specific
points in development (i.e., transition points) influence
subsequent functioning (i.e., at the end of high school).
Scholars have posited that experiences of discrimination
may influence outcomes differentially across the life
course, and that increases in discrimination at certain
points in development may serve as “sensitive periods”
predicting later functioning (Gee et al. 2012). This article
leverages a novel statistical technique (i.e., latent change
score (LCS) framework; Castro-Schilo et al. 2016) to
examine whether there are specific timepoints across early
to late adolescence where increases in peer discrimination
have a greater impact on internalizing symptomatology in
a sample of Mexican-origin youth.
* Gabriela Livas Stein
[email protected]
1 Department of Psychology, University of North Carolina at
Greensboro, Greensboro, NC, USA
2 SAS Institute Inc, RTP, Greensboro, NC, USA
3 Frank Porter Graham Child Development Institute, University
of
North Carolina at Chapel Hill, Chapel Hill, NC, USA
4 Department of Psychology, University of California at Davis,
Davis, CA, USA
Supplementary information The online version of this article
(https://
doi.org/10.1007/s10964-019-01012-3) contains supplementary
material, which is available to authorized users.
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http://orcid.org/0000-0002-7365-5169
http://orcid.org/0000-0002-7365-5169
http://orcid.org/0000-0002-7365-5169
http://orcid.org/0000-0002-7365-5169
http://orcid.org/0000-0002-7365-5169
mailto:[email protected]
https://doi.org/10.1007/s10964-019-01012-3
https://doi.org/10.1007/s10964-019-01012-3
Peer Discrimination and Internalizing Symptoms
Multiple socioecological models of development in youth
of color have focused on the processes through which
families successfully navigate the oppressive and dis-
criminatory landscape in the United States (i.e., Garcia Coll
et al. 1996). These models highlight the damaging effects of
discrimination on developmental outcomes in youth of
color and the critical need to understand how these
experiences influence youth across development. Broadly,
depressive symptoms serve as the most widely studied
outcome associated with discrimination in youth, with
fewer studies examining anxiety (Priest et al. 2013). Peer
discrimination may be particularly harmful for youth as it
serves as an interpersonal stressor that impacts develop-
mental processes central to adolescents (e.g., ethnic-racial
identity, peer acceptance, self-concept, and emerging
abstract reasoning; Hughes, Watford et al. 2016). Peer
discrimination encompasses direct biased mistreatment by
peers due to race/ethnicity and also indirect experiences,
such as hearing classmates make jokes about racial groups,
contributing to a climate where youth feel devalued in
schools (Douglass et al. 2016). There has been variability
across past studies on the aspects of peer discrimination
assessed, including direct biased treatment (i.e., Niwa et al.
2014) or more indirect experiences (i.e., Berkel et al. 2010).
Indeed, indirect and direct peer discrimination are asso-
ciated with greater depressive symptoms and anxiety
symptoms in Mexican-origin youth across time. Greater
peer discrimination in 5th grade was associated with more
internalizing symptoms two years later (Berkel et al. 2010).
Similarly, greater peer discrimination in 7th grade predicted
greater depressive symptoms in 9th grade that declined over
time across high school (Delgado et al. 2017). Yet, neither
of these studies tested how longitudinal changes in peer
discrimination influenced subsequent outcomes.
Longitudinal Studies of Peer Discrimination
The majority of research on the longitudinal trajectories of
peer discrimination across early and mid-adolescence in
multiethnic samples has found declines in middle school
(Niwa et al. 2014; 27% Latinx), declines throughout high
school (e.g., Bellmore et al. 2012; 54% Latinx) or no
changes in high school (e.g., Greene et al. 2006; 45%
Latinx). Only one study has examined trajectories of peer
discrimination in a solely Latinx sample, finding that the
trajectories depended on neighborhood context (increases
for youth living in neighborhoods with fewer Latinx co-
ethnics) and nativity status (no changes for U.S. born youth
vs. declines for youth born outside of the U.S. (White et al.
2014; 100% Mexican-origin). Other studies in Latinx
samples examined trajectories using global measures of
discrimination (including peer discrimination) finding more
variability. One study documented increases from 9th to
10th grade (i.e., Benner and Graham 2011; 62% Mexican-
origin). Other studies found no changes across 10th to 12th
grades (Sirin et al. 2015; no information on country of
origin), or different classes of trajectories across 9th grade
to three years post high school (i.e., increasing, decreasing,
and two stable; Unger et al. 2014; no information on
country of origin)). Regardless of mean level trajectories,
there has been significant individual variability in trajec-
tories such that greater levels of discrimination across time
have been associated with worse depressive (Stein et al.
2016; 19% Latinx) and/or anxiety (Sirin et al. 2015)
symptoms in multiethnic samples. However, no past study
has examined how peer discrimination longitudinally relates
to depressive and/or anxiety symptoms in a solely Latinx
sample.
These disparate findings of peer discrimination trajec-
tories are likely in part due to differences in methodology
(i.e., age ranges, measurement), population (i.e., ethnic/
racial make-up) and context (i.e., diversity of school,
urbanity). Yet, longitudinal changes in peer discrimination
appear to depend on age range, with a recent study doc-
umenting that peer discrimination increases in middle
school and decreases in high school (e.g., Hughes et al.
2016; 24% Latinx). Understanding longitudinal changes in
discrimination may require modeling approaches that are
able to capture change with a higher level of granularity
(Benner 2017), including testing differences across specific
transitions.
Transition Points in Adolescence
School transition points have long been posited as critical
periods linked to increased risk for negative outcomes in
adolescence due to the convergence of changes across the
individual and environment (i.e., role demands, class sizes,
shifts in social networks, educational expectations, cogni-
tive development; Barber and Olson 2004). In particular,
the mismatch of the adolescent’s developmental needs for
interpersonal connections and support with school envir-
onments that are inherently less personal and rife with social
stress may serve to place youth at risk for internalizing
symptoms across time (Eccles et al. 1993). Additionally,
transitions to middle and high school are usually associated
with changes in student demographics where youth are
more likely to have greater exposure to other racial/ethnic
peers (Aud et al. 2010). In one study, the transition to high
school was associated with increases in Latinx students’
reports of discrimination, which translated to worse aca-
demic functioning (Benner and Graham 2011; 62% Mex-
ican-origin), and these increased reports were higher for
youth in schools with greater ethnic diversity. The changes
Journal of Youth and Adolescence (2019) 48:864–875 865
in the school context at transition points, together with shifts
in cognitive processes, likely set the stage for changes in the
experience of peer discrimination (Hughes et al. 2016b).
Increases in stressful peer experiences at critical transi-
tion points may translate to longitudinal risk in internalizing
symptomatology, as these experiences constitute inter-
personal rejections that build over time, interact with psy-
chobiological risk, and in turn, lead to greater
symptomology (Hankin 2015). A life course perspective on
the impact of racism highlights the importance of under-
standing how changes in settings may serve as risks for
increased exposure, and how this exposure may have psy-
chological impacts across time (Gee et al. 2012). Specifi-
cally, it is important to understand “sensitive periods”
where exposure to discrimination affects functioning at later
stages in development (i.e., at the end of adolescence). For
peer discrimination, changes in these experiences may be
uniquely damaging over time given the intersection of peer
salience and emerging identity processes (i.e., grappling
with oppression and unfair treatment; Hughes et al. 2016b).
Understanding the differential impact of transition points
on the development of internalizing symptoms necessitates an
individual differences approach that allows modeling of both
within person change at specific points in time and how those
changes predict subsequent adjustment (Rudolph et al. 2001).
The current article takes advantage of a latent change score
(LCS) framework that explicitly models changes across time
allowing for unique change-to-outcome prediction across time
(Castro-Schilo et al. 2016). In other words, an LCS can test
whether there are specific increases that are more problematic
or “risky” for particular psychological outcomes over time.
For the current article, this allows a test of how changes at
specific time points (increases or decreases in peer dis-
crimination) relative to other time points influence subsequent
anxiety and depressive symptoms later in development. This
article examined how changes in the interpersonal context at
key transition points influence subsequent symptomatology,
to decipher whether increases overall are more harmful or
there is unique harm from changes at the start of an educa-
tional experience. Increases in peer discrimination that are
timed at the transition points are hypothesized to be particu-
larly harmful, as these would be foundational for engagement
in school, potentially leading youth to perceive school as an
“inhibiting environment” (Garcia Coll et al. 1996).
Current Study
The transitions to middle and high school serve as key
developmental milestones that are associated with
increased psychosocial risk, including potential experi-
ences with peer discrimination associated with these
transitions. Building off past longitudinal work on peer
discrimination predicting internalizing symptoms long-
itudinally, this study tests the impact of changes in dis-
crimination at specific points in development in a Latinx
sample. The current article used an LCS framework to test
whether increases in peer discrimination at these educa-
tional transition points were associated with greater
internalizing symptoms in 12th grade.
It was hypothesized that Mexican-origin youth would
experience increases in peer discrimination at both the
middle school and high school transitions (i.e., 6th to 7th
and 8th to 9th). In order to test the uniqueness of the timing
effect, changes were examined for every grade, as has been
done in previous tests of transition points (e.g., Barber and
Olson 2004). Because past work has found greater increases
in discrimination in boys relative to girls (e.g., Benner and
Graham 2011), the analyses also tested whether biological
sex affected these increases. Moreover, it was hypothesized
that baseline peer discrimination would be related to more
anxiety and depressive symptoms overall, and that increases
at the transition to middle and high school would be asso-
ciated with greater depressive and anxiety symptoms at 12th
grade controlling for symptoms in 5th grade and socio-
economic status and nativity.
Method
Participants and Procedures
The current article used data from the California Families
Project (CFP), which was granted approval by the University
of California at Davis Institutional Review Board (Protocol #
217484-21). CFP is a longitudinal study of Mexican-origin
youth and their parents (N = 674) that started in 2006. Chil-
dren were drawn at random from rosters of students from the
Sacramento and Woodland, CA, school districts (83 different
elementary schools). Across the first four waves of data col-
lection, the Sacramento school district served a high percen-
tage of low-income students (64–71% of students were
eligible for free or reduced lunch) and a very diverse ethnic
demographic (32–36% Hispanic, 18–21% White, 18–21%
Asian, 18–21% African American, 5–9% other; DataQuest
2013). The Woodland school district also served a high per-
centage of low-income students (49–63% of students were
eligible for free or reduced lunch) and a diverse ethnic
demographic (57–63% Hispanic, 28–33% White, 5% Asian,
1% African American, 3–6% other; DataQuest 2013). The
focal child had to be in the 5th grade, of Mexican origin, and
living with his or her biological mother to participate in the
study. Approximately 72.6% of the eligible families agreed to
participate in the study. The children (50% female) were
assessed annually from 5th (Mage at Wave 1 = 10.86, SD =
0.50) through 12th grade (Mage at Wave 8 = 17.73, SD =
866 Journal of Youth and Adolescence (2019) 48:864–875
0.52). Data collection occurred from 2006 to 2015 for the
waves in the present study. Family-level retention rates
(relative to the original sample) were 85% at 6th grade, 86%
at 7th grade, 89% at 8th grade, 91% at 9th grade, 89% at 10th
grade, 90% at 11th grade, and 92% at 12th grade. To
investigate the potential impact of attrition, individuals who
did and did not participate in the 12th grade assessment on
study variables assessed in the 5th grade were compared. No
significant differences were found in the study variables or
gender, all p’s > 0.10. Participants were interviewed in their
homes in Spanish or English, depending on their preference.
Interviewers were bilingual and most were of Mexican heri-
tage. Across Waves 1 to 8, between 3.9% and 15.0% of the
focal children were interviewed in Spanish. Sixty-three per-
cent of mothers and 65% of fathers had less than a high
school education (median = 9th grade for both mothers and
fathers); median total household income was between
$30,000 and $35,000 at Wave 1 (overall range of income = <
$5000 to >$95,000). With regard to generational status,
83.6% of mothers and 89.4% of fathers were first generation
(born outside the United States), and 16.4% of mothers and
10.6% of fathers were born in the United States. Also, 28.5%
of children were first generation and 71.5% were born in the
United States. At Wave 1, 124 of the families were single-
parent households (mothers only), and 549 of the families
were two-parent households. Ninety-seven percent of youth
transitioned to middle school in 7th grade and the high school
transition occurred at 9th grade for all youth.
Measures
Peer discrimination
Three items assessed peer global experiences of discrimination
reported by youth at every wave of data collection (Johnston
and Delgado 2004), and this measure of peer discrimination
has been used in other samples of Mexican-origin youth
reviewed above (Delgado et al. 2017). Youth responded on a
4-point Likert-type scale (1 = not at all true to 4 = very true)
on items assessing direct and indirect discrimination from
peers (i.e., You have heard kids at school making jokes or
saying bad things about Mexicans/Mexican-Americans; Kids
at school think bad things about Mexicans/Mexican Amer-
icans; Kids at school dislike Mexicans/Mexican Americans).
Coefficient alpha across waves ranged from 0.74 to 0.81.
Anxiety and depressive symptoms
The National Institute of Mental Health (NIMH) Diagnostic
Interview Schedule for Children-IV (DISC-IV) is a com-
monly used measure that assesses 30 different psychiatric
diagnoses for children and adolescents (Shaffer et al. 2000).
This measure has been validated in both English and Spanish.
This study used the child reported Generalized Anxiety Dis-
order (GAD; 65 items/12 symptoms) diagnostic section from
the Anxiety Disorders module and the Major Depression
Disorder (MDD, 256 items/22 symptoms) portion of the
Mood Disorders section from the DISC-IV. Children reported
whether they had experienced a symptom within the past year
(0 = no, 1 = yes). Symptom counts variables were calculated
for both GAD and MDD per wave. Only child-reported
symptoms were collected in this data set.
Covariates
The analyses included education, income, and youth
nativity (born in Mexico or born in the US) as control
variables for the key outcomes of anxiety and depression.
Mothers’ and fathers’ educations were reported by mothers
in years of schooling (M = 9.26, SD = 3.31) and were
included as the average across mothers and fathers, or only
mothers when data for fathers were not available. Mothers
reported family income in the first wave of data collection
using a 20-point scale with $5,000 increments (M =
$30,000–$35,000, SD = $15,000–$20,000).
Data Analysis
A latent change score (LCS) framework was used to
explicitly model changes in reported global discrimination
from peers across waves of assessment (5th to 12th grades).
Higher-order LCS models (Ferrer et al. 2008) allowed for
modeling of time-specific, error-free changes that were used
as predictors of subsequent psychological outcomes (e.g.,
Castro-Schilo et al. 2016). This was particularly useful for
this investigation because change-to-outcome effects could
vary over time. Traditional linear latent growth curve
models summarize rates of change in one latent variable
(i.e., slope) across all waves of measurement, whereas LCS
models enable specification of rates of change from one
wave to the next. The multiple change factors provide more
granularity to the overall trajectory and can be used to
predict future outcomes.
To account for measurement error in the latent change
factors, a measurement model for discrimination was spe-
cified at each measurement occasion. Tests of factorial
invariance (Widaman and Reise 1997) were then conducted
as a preliminary step to establish that the same construct
was modeled over time.
The higher-order LCS model can be written as
X tð Þn ¼ τx þ λxf tð Þn þ exðtÞn;
Y tð Þn ¼ τy þ λyf tð Þn þ eyðtÞn; and
W tð Þn ¼ τw þ λwf tð Þn þ ewðtÞn; with
Δf tð Þn ¼ μΔðtÞ þ β � f t�1ð Þn þ zΔn;
ð1Þ
Journal of Youth and Adolescence (2019) 48:864–875 867
where X, Y, and W, are manifest variables for person n at
time t, τ, λ, and e are the intercepts, factor loadings, and
unique factor scores, respectively, for each observed
variable, Δf represents change in factor f at time t, μΔ is
the intercept of the change factors at time t, β is a coefficient
representing the effect of the factor at the previous state on
the change, and zΔn is the residual of latent change. Thus,
the score of the latent factor f for person n at any given time
t can be written as a function of its initial state plus all the
changes accumulated up to time t, as
f tð Þn ¼ f0n þ
Xt
i¼1
Δf ið Þn
!
ð2Þ
Figure 1 provides a path diagram for the higher-order
LCS model. This figure depicts three manifest variables
measured across eight occasions. For the repeated assess-
ments, new latent variables f(t) are specified to facilitate the
higher-order LCS parameterization. With these new latent
variables, Δf(t)n are specified, which represent latent changes
from one occasion to the next. Latent change factors at each
occasion are influenced by the status in a previous time
point and by the average trajectory. The degree to which the
previous status influences changes is captured by the β
coefficients. Analogous to latent growth curve models,
means of change factors (μΔf(t)) are also estimated (the mean
of the higher-order level is fixed at zero for identification).
The factor’s longitudinal trajectory is modeled through
latent, error-free changes. Outcomes of change factors and
covariates can be included as depicted by the gray boxes.
Model Fit and Model Comparisons
A chi-square, χ2, comparative fit index (CFI; Bentler 1990)
and root mean square error of approximation (RMSEA;
Steiger 1990) was used to assess model fit. The χ2 statistic is
sensitive to sample size (Bollen 1989), such that models
with larger sample sizes tend to result in a significant χ2
(interpreted as significant misfit) despite having appropriate
fit to the data; thus, CFI and RMSEA estimates were
assessed when considering model fit and conducting model
comparisons. CFI values of .95 or greater and RMSEA
values of .10 or lower are interpreted as adequate fit
(MacCallum et al. 1996). With regard to model compar-
isons, a change in CFI and RMSEA of .01 or greater sug-
gests a substantial change in model fit (Cheung and
Rensvold 2002).
Results
Descriptive Statistics and Factorial Invariance
Three items were available at each wave from 5th to 12th
grade, and means varied across items and time points (item
means = 1.189–1.639; SD = 0.440–0.856; sample sizes =
565–661). These values suggest that, overall, participants
reported low levels of peer discrimination across the dura-
tion of the study. Standard recommendations for assessing
longitudinal factorial invariance (Widaman and Reise 1997)
were followed. After specifying a configural invariance
model—that is, one in which the same set of items over
time are indicators of multiple time point peer discrimina-
tion latent variables—equality constraints were placed on
the factor loadings and there was support for weak factorial
invariance (Δχ2 = 33.15, Δdf = 14, p = 0.002, ΔCFI =
0.003, ΔRMSEA = 0.000). Next, a test for strong factorial
invariance was conducted by placing equality constraints on
intercepts over time and found these restrictions tenable
(Δχ2 = 30.42, Δdf = 14, p = 0.006, ΔCFI = 0.003,
ΔRMSEA = 0.000). Equality constraints on uniquenesses,
however, resulted in large deterioration of model fit, as
assessed by much larger changes in chi-square, CFI and
RMSEA (Δχ2 = 354.49, Δdf = 21, p < 0.001, ΔCFI =
0.058, ΔRMSEA = 0.018). Thus, strict factorial invariance
did not hold and the strong invariance model was retained.
Fig. 1 Path diagram of higher-order latent change score (LCS)
model
across eight waves of assessment. Manifest variables are
represented
by squares. Latent variables are represented by circles. The
triangle
represents a constant to estimate means and intercepts.
Although not
depicted in this figure, covariances among unique factors of
same
manifest variables across time are estimated. Factor loadings,
manifest
variable intercepts, unique variances, and change factor residual
var-
iances are represented as invariant over time. Covariates and
outcomes
are represented as a group in the gray boxes. The second row of
factors
is specified to facilitate estimation of the model
868 Journal of Youth and Adolescence (2019) 48:864–875
Strong factorial invariance suggests comparable con-
ceptualization of peer discrimination over time and enables
a meaningfully assessment of longitudinal changes in this
process (Widaman and Reise 1997).
Peer Discrimination Trajectories
A higher-order LCS model was fit to these data to capture
the year-to-year changes in peer discrimination. The LCS
framework captures error-free changes to get a more accu-
rate picture of the trajectories over time. The first specified
model was estimated such as that portrayed in black in Fig.
1 (i.e., focusing only on the longitudinal trajectories of
perceived peer global discrimination). This model provided
good fit to the data, χ2(250) = 518.32, CFI = 0.953,
RMSEA = 0.040. This model was compared to one in
which the auto-proportion parameters (the beta coefficients
in Fig. 1) were constrained to be equal over time, χ2(256) =
534.46, CFI = 0.951, RMSEA = 0.040, and these con-
straints did not affect the fit of the model substantially, Δχ2
(6) = 16.14, ΔCFI = 0.002, ΔRMSEA = 0.000. However,
comparing the model in Fig. 1 to one with equal means of
latent change factors over time, χ2(256) = 625.31, CFI =
0.935, RMSEA = 0.046, suggested such constraints were
not tenable, Δχ2(6) = 106.99, ΔCFI = 0.016, ΔRMSEA =
0.006. In sum, the model comparisons suggested that peer
discrimination trajectories were best characterized by the
model portrayed in Fig. 1 but with equal auto-proportion
estimates.
Parameter estimates from the final model pointed to
significant changes, on average, from 5th to 6th grade, μΔf2
= −0.165, SE = 0.03, p < 0.001, followed by non-
significant average changes from 6th to 7th and 7th to 8th
grades, μΔf3 = −0.031, SE = 0.03, p = 0.219 and μΔf4 =
0.016, SE = 0.02, p = 0.483, respectively. Thereafter, all
changes were statistically significant, including those from
8th to 9th grade, μΔf5 = 0.090, SE = 0.02, from 9th to 10th,
μΔf6 = −0.069, SE = 0.02, 10th to 11th grade, μΔf7 = 0.091,
SE = 0.02, and 11th to 12th grade, μΔf8 = −0.144, SE =
0.02, all ps < 0.001. Importantly, there was significant
variability in peer discrimination at baseline (5th grade) σ2f 0
= 0.123, SE = 0.02, p < 0.001, and also in the residual
variance of latent changes, σ2Δ = 0.04, SE = 0.01, p < 0.001,
pointing to significant departures from the average trajec-
tory across all time points. Furthermore, the auto-proportion
coefficient was also significant, b = −0.15, SE = 0.02, p <
0.001. This effect suggests significant negative influences
between status on peer discrimination on a given grade and
subsequent changes in this construct. Because there are two
“forces” dictating individual trajectories of peer dis-
crimination—namely, the auto-regressive effect and the
mean changes—plotting the model-predicted latent trajec-
tories can be useful for interpreting results. These
trajectories, from grades 5 to 12 for a random sample of 100
individuals (to facilitate interpretation of the plot), are
shown in Fig. 2.
The average trajectory in Fig. 2 shows the average
decreases in peer discrimination in the first year of the
study, followed by two years of stability and a further
increase, decrease, increase, and a final decrease during the
last year. However, the individual trajectories in this plot
also illustrate the departures from the average trajectory for
a subset of individuals. For example, some individuals
increase in peer discrimination from 5th to 6th grade, which
is contrary to the average trajectory. Similar discrepancies
with the average trajectory are apparent across time for
some individuals, reflecting the significant variability in
change over time.
To investigate whether girls and boys differ in their
perceived peer global discrimination, an additional model
was fit in which a binary predictor (0 = male, 1 = female) of
the initial level and subsequent latent change factors of peer
discrimination were included. Results from this model
suggested null effects of gender on baseline (b = −0.08, SE
= 0.05, p = 0.147) and changes in trajectories over time (b
= 0.04, −0.05, 0.03, −0.06, 0.01, 0.06, −0.01, SE = 0.05,
0.06, 0.05, 0.04, 0.04, 0.04, 0.04, 0.04, p = 0.147, 0.452,
0.326, 0.555, 0.160, 0.776, 0.143, 0.800, for changes from
5th to 6th, 6th to 7th, 7th to 8th, 8th to 9th, 9th to 10th, 10th
to 11th, and 11th to 12th grade, respectively).
Outcomes of Peer Discrimination Changes
The last step in this investigation consisted of unveiling the
associations of youths’ patterns of change in peer dis-
crimination with future internalizing outcomes. These ana-
lyses tested whether levels of peer discrimination at 5th
grade and ensuing changes in this construct through 12th
grade were predictive of anxiety and depressive symptoms
at 12th grade. These analyses accounted for the effect of
Fig. 2 Implied model trajectories of peer discrimination from
5th to
12th grades for a randomly selected sample of 100 participants.
The
thick dotted line represents the average model implied
trajectory
Journal of Youth and Adolescence (2019) 48:864–875 869
parental education, family income, nativity, and anxiety and
depressive symptoms measured at 5th grade (see gray boxes
in Fig. 1). Fit indices for this model suggested good fit to
these data, χ2(403) = 700.49, CFI = 0.951, RMSEA =
0.033. Regression estimates for the model are listed in
Table 1. In line with the hypotheses, results suggest that
baseline levels of peer discrimination at 5th grade sig-
nificantly predicted anxiety, β = 0.26, b = 1.09, SE = 0.35,
p < 0.005, and depressive symptoms, β = 0.25, b = 2.35,
SE = 0.76, p < 0.005, 7 years later. Importantly, changes in
peer discrimination between grades 7 and 8 (1 year after the
transition to middle school) and grades 9 to 10 (1 year after
the transition to high school) predicted future anxiety
symptoms at 12th grade, β = 0.25 and 0.31, b = 1.70 and
2.07, SE = 0.70 and 0.73, p < 0.05 and <0.01, respectively.
Specifically, increases in peer discrimination during those
years, and not at other timepoints, were associated with
higher levels of anxiety symptomatology in 12th grade. In
contrast, none of the latent change factors were predictive of
future depressive symptoms.
It is important to note the analyses originally also
attempted to include teacher discrimination. However, the
distributions of the items were highly skewed and initial
models either did not converge or produced non-positive
definite matrices, thus leading to the focus on peer
discrimination.
Discussion
Due to the negative psychological impact of peer dis-
crimination across adolescence, research has attempted to
understand the trajectories of peer discrimination in middle
and high school aged youth and their relation to mental
health functioning, with multiple studies supporting this
longitudinal association (Benner et al. 2018). Public health
models attempting to understand health inequities have
argued for a life course perspective testing whether
experiences of discrimination at earlier points in develop-
ment may serve as sensitive periods predicting later func-
tioning (Acevedo-Garcia et al. 2013). Similarly, transitions
to middle and high school have been suggested to serve as
potential risks to adolescent functioning (Barber and Olson
2004). However, no past longitudinal study of peer dis-
crimination has taken this approach and examined how
increases at transition points (i.e., transition to middle and
high school) impact subsequent mental health functioning
(i.e., depressive and anxiety symptoms). To fill this gap in
the literature, this article examined changes in peer dis-
crimination across 5th to 12th grades in a Mexican-origin
sample. Using a novel statistical technique (LCS), the cur-
rent study was able to test whether increases in reports of
peer discrimination at particular points in development (i.e.,
transition to middle school or high school) uniquely pre-
dicted internalizing symptom at the end of high school.
Consistent with past work, peer discrimination in 5th grade
predicted greater symptoms of both depression and anxiety
in 12th grade, contributing to the literature on the negative
impact of these experiences across adolescence (Benner
et al. 2018). Further, there were significant differences in
the year-to-year changes in reports of peer discrimination,
supporting the need for research to consider how experi-
ences of discrimination may change across schooling peri-
ods and the need to take a life course perspective that tests
potential “sensitive periods” (Acevedo-Garcia et al. 2013).
Although there was no support for the hypothesis that
increases in peer discrimination immediately after the
transitions to middle and high school impact subsequent
functioning, increases in peer discrimination in the year
after the transition points in schooling were uniquely
Table 1 Regression estimates from higher-order latent change
score
model with internalizing outcomes
β b SE z p
Predictors of grade 12 anxiety
symptoms
Baseline grade 5 0.26 1.09 0.35 3.17 0.002
Changes grade 5–6 −0.17 −1.12 0.95 −1.19 0.236
Changes grade 6–7 0.14 0.94 0.73 1.29 0.197
Changes grade 7–8 0.25 1.70 0.70 2.42 0.015
Changes grade 8–9 0.00 0.02 0.69 0.03 0.973
Changes grade 9–10 0.31 2.07 0.73 2.84 0.005
Changes grade 10–11 −0.16 −1.09 0.72 −1.51 0.130
Changes grade 11–12 −0.07 −0.46 0.64 −0.73 0.466
Anxiety symptoms grade 5 −0.02 −0.01 0.04 −0.29 0.771
Depression symptoms grade 5 0.12 0.05 0.02 2.52 0.012
Income −0.02 −0.01 0.02 −0.39 0.694
Family education 0.09 0.04 0.02 1.89 0.059
Nativity −0.06 −0.20 0.14 −1.40 0.162
Predictors of grade 12
depression symptoms
Baseline grade 5 0.25 2.35 0.76 3.10 0.002
Changes grade 5–6 −0.01 −0.09 1.99 −0.04 0.966
Changes grade 6–7 0.13 1.96 1.62 1.21 0.225
Changes grade 7–8 −0.03 −0.41 1.53 −0.27 0.791
Changes grade 8–9 0.07 0.99 1.50 0.66 0.508
Changes grade 9–10 0.18 2.71 1.54 1.76 0.079
Changes grade 10–11 −0.13 −1.96 1.57 −1.25 0.212
Changes grade 11–12 −0.03 −0.49 1.42 −0.34 0.732
Anxiety symptoms grade 5 0.04 0.07 0.08 0.80 0.426
Depression symptoms grade 5 0.13 0.11 0.04 2.68 0.007
Income −0.03 −0.03 0.04 −0.74 0.462
Family education 0.02 0.02 0.05 0.31 0.754
Nativity −0.11 −0.85 0.32 −2.66 0.008
870 Journal of Youth and Adolescence (2019) 48:864–875
predictive of greater anxiety symptoms in 12th grade, while
this was not the case for depressive symptoms.
Peer Discrimination Trajectories
The average trajectory of peer discrimination from 5th to
12th grade suggested stability at the initiation of middle
school and an increase at the transition to high school.
Overall, this pattern of findings is opposite to what has been
documented in recent work examining both schooling per-
iods, suggesting increases in peer discrimination in middle
school and decreases in high school (Hughes, Del Toro
et al. 2016). The different set of findings across both studies
could be due to statistical modeling approaches, as the
Hughes et al., study did not examine each transition point
independently, but instead modeled discontinuous trajec-
tories across both time frames. Additionally, the measures
of peer discrimination were different with the current
measure assessing an overall sense of discrimination rela-
tive to the frequency of peer discrimination in the Hughes
study. However, it may also be that the discrepant findings
resulted from important differences in the samples’ demo-
graphics (i.e., multi-ethnic vs. Mexican-origin), location
(New York City vs. central valley CA), and schooling
contexts (the timing of the transition) that potentially
influence the experiences of peer discrimination (Hughes
et al. 2016). The Hughes et al., study purposefully selected
middle schools based on diversity indices which was not the
case for the CFP sample as youth were recruited from two
large school districts. Thus, there may have been significant
differences in the ethnic/racial composition changes asso-
ciated with the middle school transition across both sam-
ples, which has been shown to be important for the
transition of youth of color (Benner 2011). Finally, work
done in California has generally documented increases in
peer discrimination, particularly in the high school period
(i.e., the current results, Benner and Graham 2011), but
work done in New York has failed to find mean level
increases (i.e., Hughes et al. 2016a; Sirin et al. 2015; Niwa
et al. 2014). Indeed, ethnic concentration in neighborhoods
has been shown to influence peer discrimination trajectories
(White et al. 2014) suggesting that it will be critical for
future work on peer discrimination at school transitions to
further consider how context plays a role in the experiences
of peer discrimination.
The results align with other studies of Latinx adolescents
that find increases in reported discrimination during high
school (Benner and Graham 2011), and suggest the transi-
tion to high school may bring specific risk through increases
in discrimination for Latinx youth. However, this risk was
not specific to either boys or girls in the current sample,
whereas Benner and Graham demonstrated a difference for
boys. This may be due to the measures of discrimination, as
Benner and Graham did not focus just on peer discrimina-
tion and included items that may be more salient for boys
(i.e., people were suspicious of you; disciplined unfairly and
given detention), as there are demonstrated gendered dis-
cipline disparities for Latinx youth (Wallace, Goodkind,
Wallace and Bachman 2008). Further, the analyses con-
trolled for nativity in our analyses, but future work should
consider what other factors (i.e., language use, SES) influ-
ence peer discrimination.
Peer Discrimination and Symptomatology
Not surprisingly, and in line with a growing body of
research, baseline peer discrimination predicted worse
symptoms in 12th grade, controlling for 5th grade symp-
toms. As theorized in models of non-White youth child
development (i.e., Garcia Coll et al. 1996), negative peer
discriminatory experiences can have far-reaching con-
sequences in development. This is one of the few studies
that has longitudinally established this relation across such a
large range of adolescence (5th to 12th grades) for both
symptoms of anxiety and depression and in a solely Latinx
sample (see Delgado et al. 2017 for another paper testing
depressive symptoms).
Future work should unpack the individual and contextual
risk and resilience mechanisms that lead to this longitudinal
association. For example, a negative perception of school
climate may be an important mediator that is associated
with changes in the racial/ethnic compositions of school
environments and peer discrimination (Benner and Graham
2011) and merits further research attention. Concomitant
changes in discrimination and perceptions of school climate
may negatively impact psychosocial and academic func-
tioning for Latinx youth. Similarly, school attachment and
ethnic-racial identity exploration in middle adolescence
served to protect Mexican-origin youth from internalizing
symptoms in late adolescence (White et al. 2018), and these
processes may be important sources of resilience. Further,
recent work suggests that the relation between internalizing
symptoms and discrimination across adolescence is bidir-
ectional (Hou et al. 2015), and more work should endeavor
to examine how these processes relate across time, espe-
cially for depressive symptoms for which there was no
evidence of timing effects.
The analyses, however, did find timing effects for
symptoms of anxiety and suggests that increases in
experiences of peer discrimination at specific points may be
critical to understanding the longitudinal interplay of these
symptoms and discrimination, albeit not occurring at the
year immediately after the transition. Nevertheless, this
finding falls in line with life course theories of the impact of
racism and suggests that timing effects are important to test
(Gee et al. 2012). Increases in peer discrimination in the
Journal of Youth and Adolescence (2019) 48:864–875 871
years after both the middle and high school transitions were
associated with greater anxiety symptoms in 12th grade
suggesting that it is important to consider how experiences
of discrimination at these two different schooling intervals
function to set up developmental pathways across the
remainder of adolescence. Although the transition points
did not function as the point of risk, the findings do suggest
that both middle and high school may serve as a “sensitive
period” where changes have longitudinal ramifications for
anxiety symptoms. Overall, adolescence has been posited to
serve as a “sensitive period” to social rejection due to
functional and structural changes in brain development
(Blakemore and Mills 2014). Yet, there has not been a
significant amount of work examining “sensitive periods”
involved in experiences of discrimination. Transition
changes may be particularly demanding for youth with risk
for anxiety, as these youth may feel more wary of navi-
gating the changing social landscape of their new environ-
ment. For example, teasing about ethnicity and race led to
greater daily anxiety for youth with already high anxiety
and also feelings of social anxiety that were evident for days
after the incident (Douglass et al. 2016; 43% Latinx).
The findings of the current study suggest, however, that
the risk of the transition was not immediate but that changes
in the year following the transition were most detrimental.
Perhaps this may be due to the fact that youth had to have
some significant peer experiences within the new school
context for them to characterize their peers as holding these
beliefs. Consistent with this notion that it is not the
immediate transition that is most detrimental, in a study by
Benner and Graham (2009), the transition to high school
resulted in increases in school belonging that started dis-
sipating in the year following the transition. This suggests
that interactions with peers and teachers were necessary to
inform their experience of school belonging, which may
operate similarly for experiences of peer discrimination.
As youth begin to assimilate these experiences, this may
lead to increases in the race-based rejection sensitivity
(Mendoza-Denton et al. 2002), withdrawal from peer net-
works due to avoidance, and disengagement from the
school environment culminating in greater symptomatology
over time (Erath et al. 2007). Models of health disparities
have also highlighted that rumination and anticipation of
future discrimination exert a toxic effect on health (i.e.,
racial vigilance; race rejection sensitivity, Hicken, Kravitz-
Wirtz, Durkee, and Jackson 2018). Recent experimental
work by Huyhn et al. (2017) with Latinx emerging adults
suggests that exposure to indirect discrimination resulted in
greater cortisol output in a stress task and poorer recovery,
suggesting that altered stress responsivity may be involved
in the continued risk for anxiety symptoms overtime. Thus,
these changes may be particularly problematic for changes
in anxiety symptoms and not as relevant for depressive
symptoms, which have more immediate impact. Indeed,
using the same measure in different samples of Latinx
youth, Berkel and colleagues (2010) demonstrated increases
in depressive symptoms in the following time point (2 years
later), and Delgado et al. 2017 showed that discrimination
in 7th grade impacted increases in depressive symptoms in
9th grade that then had downward trajectories. Future work
should continue to examine how peer discrimination serves
as risk differentially for depressive and anxiety symptoms,
especially given that there is much less work examining
anxiety symptoms specifically (Priest et al. 2013), and
whether there are other potentially “sensitive period” for
other outcomes. Further, future work should also start to
identify moderators and mediators of these associations to
help lead to preventive efforts.
Limitations and Implications
The current study contributes to the literature on the life
course and peer discrimination through the unique exam-
ination of changes across adolescence and their relation to
internalizing symptomatology, but there are significant
limitations to this current study. First, the data set does not
have a measure of changes in the racial/ethnic composition
of the schools to test whether these changes were related to
changes in reports of peer discrimination. Second, the cur-
rent measure of peer discrimination was global in nature and
did not capture nuanced experiences of peer discrimination
that would potentially be different across gender and
nationality. These potential nuanced experiences would be
important to consider from an intersectional perspective. In
the same vein, this measure did not capture the source of
peer discrimination (i.e., other Latinx peers vs. non-Latinx
white peers, see Stein et al. 2018) which may also have
implications for mental health functioning. Finally, the
measure included overall perceptions of peer discrimination
(indirect and direct) instead of frequency of personal
experiences of discrimination from peers. Thus, changes
found in this study related to overall perceptions of peer
discrimination and bias are not changes in frequency of
personal discrimination, which would also be important to
test using LCS. Yet, this measure of discrimination has been
used to test developmental trajectories of discrimination in
other Latinx samples between 5th and 7th grades (Berkel
et al. 2010), 7th grade to post high school (Delgado et al.
2017), and 5th to 10th grades (White et al. 2014).
Conclusion
Peer discrimination negatively impacts Latinx youth across
development in multiple ways, including increasing risk for
internalizing symptoms (Berkel et al. 2010). Using a life
872 Journal of Youth and Adolescence (2019) 48:864–875
course perspective, the current study tested whether
increases in peer discrimination associated with the transi-
tions to middle and high school impacted anxiety and
depressive symptoms at the end of high school. This study
significantly contributes to the literature on longitudinal
trajectories of peer discrimination across adolescence by
leveraging a novel statistical technique that allowed for the
explicit modeling of changes across time and unique
change-to-outcome prediction. The study offers new
insights into the understanding of the negative ramifications
of peer discrimination by suggesting that increases between
7th and 10th grades predict worse anxiety symptoms across
time, pointing to a potentially “sensitive period” that war-
rants further investigation. However, contrary to our pre-
diction, increases in peer discrimination in the year after the
transition were particularly harmful for later anxiety
symptoms but not depressive symptoms. This suggests two
things: (1) additional work on the impact of schooling
transition examining peer interactions should further
examine when the risk is most pronounced (i.e, immediately
or after some time) and (2) it is important to continue to
examine the unique developmental pathways through which
discrimination impacts depressive and anxiety symptoms as
the current finding suggests that there may be cumulative
effects of peer discrimination on anxiety symptoms. Addi-
tionally, these findings highlight the importance of schools
addressing issues of peer discrimination and adopting zero-
tolerance policies about discrimination. Given that one of
the three items focused on peers making jokes or saying bad
things about Mexicans/Mexican Americans, this suggests
that experiences that may be viewed as less harmful or do
not involve physical threats still take a significant toll on the
mental health of Mexican-origin youth and warrant inter-
vention. Youth in general need help from adults to navigate
social contexts and create peer ecologies that are supportive,
and, given the findings related to peer discrimination in this
article, it is clear that adults in schools need to foster sup-
portive school cultures where all youth can thrive. In par-
ticular, it may be essential for schools to support youth in
the year after the transition to new school contexts to assess
their experiences of discrimination and pay special attention
to interventions at these points.
Authors’ Contributions All authors contributed significantly
intellec-
tually to the current manuscript. G.L.S. conceived the current
study
from an existing data set, helped plan the statistical analyses,
and
drafted the majority of the manuscript. L.C. conducted the
statistical
analyses, wrote the Data Analysis and Results sections, and
made the
Table and Figures. A.C., Y.M. and K.C. contributed to the
literature
review, interpretation of data, and manuscript preparation. R.R.
con-
ceived and designed the original study, secured funding,
coordinated
data collection, and helped draft the manuscript. All authors
read and
approved the final manuscript.
Funding This research was supported by a grant from the
National
Institute on Drug Abuse (DA017902) to Richard W. Robins and
Rand
D. Conger. We thank the participating families, staff, and
research
assistants who took part in this study. The content is solely the
responsibility of the authors and does not represent the official
views
of the National Institutes of Health.
Data Sharing and Declaration The datasets generated and/or
analyzed
during the current study are not publicly available.
Compliance with Ethical Standards
Conflict of Interest The authors declare that they have no
conflict of
interest.
Ethical Approval The California Families Project (CFP) was
granted
ethical approval by the Institutional Review Board (Protocol #
217484-27) of the University of California, Davis. All authors
have
complied with the American Psychology Association’s ethical
stan-
dards in the treatment of our sample.
Informed Consent Per IRB requirements, all study participants
pro-
vide informed consent to be in the study.
Publisher’s note: Springer Nature remains neutral with regard to
jurisdictional claims in published maps and institutional
affiliations.
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devel-
opment. Development and psychopathology, 30(5), 1679–1698.
White, R. M. B., Zeiders, K. H., Knight, G. P., Roosa, M. W., &
Tein,
J.-Y. (2014). Mexican origin youths’ trajectories of perceived
peer discrimination from middle childhood to adolescence: Var-
iation by neighborhood ethnic concentration. Journal of Youth
and Adolescence, 43(10), 1700–1714. https://doi.org/10.1007/
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Widaman, K. F., & Reise, S. P. (1997). Exploring the
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from
alcohol and substance abuse research (pp. 281–324). Washing-
ton, DC: American Psychological Association.
Gabriela Livas Stein is an Associate Professor of Clinical
Psychology at the University of North Carolina at Greensboro.
Her
research examines risk and resilience processes including the
roles of
discrimination, cultural familial values, and racial/ethnic
socialization
in lives of Latinx families.
Laura Castro-Schilo is a Research Statistician Developer at the
JMP
Division of SAS Institute Inc. Her major research interests
include
methodology for the study of change and measurement.
Alyson Cavanaugh is Research Scientist at Frank Porter Graham
at
the University of North Carolina at Chapel Hill. Her major
research
interests include educational, psychological, and cultural
experiences
of ethnic minority youth.
Yesenia Mejia is a doctoral graduate student in Clinical
Psychology at
University of North Carolina at Greensboro. Her research
examines
risk and resilience in Latino youth.
Keita Christophe is a doctoral graduate student in Clinical
Psychology at University of North Carolina at Greensboro. His
research examines risk and coping in marginalized youth.
Richard Robins is a Professor of Psychology at University of
California Davis. His research focuses on the development of
personality and its consequences for important life outcomes as
well
as the development of Mexican-origin youth.
Journal of Youth and Adolescence (2019) 48:864–875 875
https://doi.org/10.1007/s10964-014-0098-7
https://doi.org/10.1007/s10964-014-0098-7When Discrimination
Hurts: The Longitudinal Impact of Increases in Peer
Discrimination on Anxiety and Depressive Symptoms in
Mexican-origin YouthAbstractIntroductionPeer Discrimination
and Internalizing SymptomsLongitudinal Studies of Peer
DiscriminationTransition Points in AdolescenceCurrent
StudyMethodParticipants and ProceduresMeasuresPeer
discriminationAnxiety and depressive symptomsCovariatesData
AnalysisModel Fit and Model ComparisonsResultsDescriptive
Statistics and Factorial InvariancePeer Discrimination
TrajectoriesOutcomes of Peer Discrimination
ChangesDiscussionPeer Discrimination TrajectoriesPeer
Discrimination and SymptomatologyLimitations and
ImplicationsConclusionCompliance with Ethical
StandardsACKNOWLEDGMENTSReferencesA9A10A11A12A1
3A14

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Journal of Youth and Adolescence (2019) 48864–875httpsdo.docx

  • 1. Journal of Youth and Adolescence (2019) 48:864–875 https://doi.org/10.1007/s10964-019-01012-3 EMPIRICAL RESEARCH When Discrimination Hurts: The Longitudinal Impact of Increases in Peer Discrimination on Anxiety and Depressive Symptoms in Mexican-origin Youth Gabriela Livas Stein 1 ● Laura Castro-Schilo2 ● Alyson M. Cavanaugh3 ● Yesenia Mejia1 ● N. Keita Christophe1 ● Richard Robins4 Received: 4 January 2019 / Accepted: 4 March 2019 / Published online: 16 March 2019 © Springer Science+Business Media, LLC, part of Springer Nature 2019 Abstract Life course models of the impact of discrimination on health and mental health outcomes posit that the pernicious effects of discrimination may not be immediate, but instead may become apparent at later stages in development. This study tests whether peer discrimination changes at particular transition points (i.e., transition to middle and high school) predict subsequent internalizing symptoms in Mexican-origin youth. In a sample of 674 Mexican-origin youth (50% female), this study used a latent change score framework to model changes in peer discrimination across time and to test whether changes in peer discrimination at 7th and 9th grades predicted greater
  • 2. depressive and anxiety symptoms in 12th grade controlling for 5th grade symptoms. Irrespective of longitudinal changes, greater peer discrimination in 5th grade predicted greater depressive and anxiety symptoms in 12th grade. Further, significant increases in peer discrimination from 7th to 8th grade and in 9th to 10th grade uniquely predicted greater anxiety symptoms in 12th grade. These findings suggest that longitudinal research on peer discrimination needs to take into account unique periods of risk. Future research implications are discussed. Keywords Latinx ● Peer discrimination ● Internalizing Introduction Experiences of peer racial/ethnic discrimination in late childhood and adolescence are associated with a host of negative outcomes, including greater symptoms of depression (Delgado et al. 2017) and internalizing problems (Berkel et al. 2010). Longitudinal examinations of the link between discrimination and internalizing symptoms typically examine either covarying trajectories over time (e.g., Bellmore et al. 2012) or how baseline discrimination influences trajectories of internalizing symptoms (e.g., Delgado et al. 2017). Although these approaches provide important information on longitudinal patterns, they fail to capture whether changes at specific points in development (i.e., transition points) influence subsequent functioning (i.e., at the end of high school). Scholars have posited that experiences of discrimination may influence outcomes differentially across the life course, and that increases in discrimination at certain points in development may serve as “sensitive periods”
  • 3. predicting later functioning (Gee et al. 2012). This article leverages a novel statistical technique (i.e., latent change score (LCS) framework; Castro-Schilo et al. 2016) to examine whether there are specific timepoints across early to late adolescence where increases in peer discrimination have a greater impact on internalizing symptomatology in a sample of Mexican-origin youth. * Gabriela Livas Stein [email protected] 1 Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC, USA 2 SAS Institute Inc, RTP, Greensboro, NC, USA 3 Frank Porter Graham Child Development Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA 4 Department of Psychology, University of California at Davis, Davis, CA, USA Supplementary information The online version of this article (https:// doi.org/10.1007/s10964-019-01012-3) contains supplementary material, which is available to authorized users. 1 2 3 4 5 6 7 8 9
  • 4. 0 () ;, : 12 34 56 78 90 () ;,: http://crossmark.crossref.org/dialog/?doi=10.1007/s10964-019- 01012-3&domain=pdf http://crossmark.crossref.org/dialog/?doi=10.1007/s10964-019- 01012-3&domain=pdf http://crossmark.crossref.org/dialog/?doi=10.1007/s10964-019- 01012-3&domain=pdf http://orcid.org/0000-0002-7365-5169 http://orcid.org/0000-0002-7365-5169 http://orcid.org/0000-0002-7365-5169 http://orcid.org/0000-0002-7365-5169 http://orcid.org/0000-0002-7365-5169 mailto:[email protected] https://doi.org/10.1007/s10964-019-01012-3 https://doi.org/10.1007/s10964-019-01012-3 Peer Discrimination and Internalizing Symptoms Multiple socioecological models of development in youth of color have focused on the processes through which families successfully navigate the oppressive and dis- criminatory landscape in the United States (i.e., Garcia Coll et al. 1996). These models highlight the damaging effects of
  • 5. discrimination on developmental outcomes in youth of color and the critical need to understand how these experiences influence youth across development. Broadly, depressive symptoms serve as the most widely studied outcome associated with discrimination in youth, with fewer studies examining anxiety (Priest et al. 2013). Peer discrimination may be particularly harmful for youth as it serves as an interpersonal stressor that impacts develop- mental processes central to adolescents (e.g., ethnic-racial identity, peer acceptance, self-concept, and emerging abstract reasoning; Hughes, Watford et al. 2016). Peer discrimination encompasses direct biased mistreatment by peers due to race/ethnicity and also indirect experiences, such as hearing classmates make jokes about racial groups, contributing to a climate where youth feel devalued in schools (Douglass et al. 2016). There has been variability across past studies on the aspects of peer discrimination assessed, including direct biased treatment (i.e., Niwa et al. 2014) or more indirect experiences (i.e., Berkel et al. 2010). Indeed, indirect and direct peer discrimination are asso- ciated with greater depressive symptoms and anxiety symptoms in Mexican-origin youth across time. Greater peer discrimination in 5th grade was associated with more internalizing symptoms two years later (Berkel et al. 2010). Similarly, greater peer discrimination in 7th grade predicted greater depressive symptoms in 9th grade that declined over time across high school (Delgado et al. 2017). Yet, neither of these studies tested how longitudinal changes in peer discrimination influenced subsequent outcomes. Longitudinal Studies of Peer Discrimination The majority of research on the longitudinal trajectories of peer discrimination across early and mid-adolescence in multiethnic samples has found declines in middle school (Niwa et al. 2014; 27% Latinx), declines throughout high
  • 6. school (e.g., Bellmore et al. 2012; 54% Latinx) or no changes in high school (e.g., Greene et al. 2006; 45% Latinx). Only one study has examined trajectories of peer discrimination in a solely Latinx sample, finding that the trajectories depended on neighborhood context (increases for youth living in neighborhoods with fewer Latinx co- ethnics) and nativity status (no changes for U.S. born youth vs. declines for youth born outside of the U.S. (White et al. 2014; 100% Mexican-origin). Other studies in Latinx samples examined trajectories using global measures of discrimination (including peer discrimination) finding more variability. One study documented increases from 9th to 10th grade (i.e., Benner and Graham 2011; 62% Mexican- origin). Other studies found no changes across 10th to 12th grades (Sirin et al. 2015; no information on country of origin), or different classes of trajectories across 9th grade to three years post high school (i.e., increasing, decreasing, and two stable; Unger et al. 2014; no information on country of origin)). Regardless of mean level trajectories, there has been significant individual variability in trajec- tories such that greater levels of discrimination across time have been associated with worse depressive (Stein et al. 2016; 19% Latinx) and/or anxiety (Sirin et al. 2015) symptoms in multiethnic samples. However, no past study has examined how peer discrimination longitudinally relates to depressive and/or anxiety symptoms in a solely Latinx sample. These disparate findings of peer discrimination trajec- tories are likely in part due to differences in methodology (i.e., age ranges, measurement), population (i.e., ethnic/ racial make-up) and context (i.e., diversity of school, urbanity). Yet, longitudinal changes in peer discrimination appear to depend on age range, with a recent study doc- umenting that peer discrimination increases in middle
  • 7. school and decreases in high school (e.g., Hughes et al. 2016; 24% Latinx). Understanding longitudinal changes in discrimination may require modeling approaches that are able to capture change with a higher level of granularity (Benner 2017), including testing differences across specific transitions. Transition Points in Adolescence School transition points have long been posited as critical periods linked to increased risk for negative outcomes in adolescence due to the convergence of changes across the individual and environment (i.e., role demands, class sizes, shifts in social networks, educational expectations, cogni- tive development; Barber and Olson 2004). In particular, the mismatch of the adolescent’s developmental needs for interpersonal connections and support with school envir- onments that are inherently less personal and rife with social stress may serve to place youth at risk for internalizing symptoms across time (Eccles et al. 1993). Additionally, transitions to middle and high school are usually associated with changes in student demographics where youth are more likely to have greater exposure to other racial/ethnic peers (Aud et al. 2010). In one study, the transition to high school was associated with increases in Latinx students’ reports of discrimination, which translated to worse aca- demic functioning (Benner and Graham 2011; 62% Mex- ican-origin), and these increased reports were higher for youth in schools with greater ethnic diversity. The changes Journal of Youth and Adolescence (2019) 48:864–875 865 in the school context at transition points, together with shifts in cognitive processes, likely set the stage for changes in the
  • 8. experience of peer discrimination (Hughes et al. 2016b). Increases in stressful peer experiences at critical transi- tion points may translate to longitudinal risk in internalizing symptomatology, as these experiences constitute inter- personal rejections that build over time, interact with psy- chobiological risk, and in turn, lead to greater symptomology (Hankin 2015). A life course perspective on the impact of racism highlights the importance of under- standing how changes in settings may serve as risks for increased exposure, and how this exposure may have psy- chological impacts across time (Gee et al. 2012). Specifi- cally, it is important to understand “sensitive periods” where exposure to discrimination affects functioning at later stages in development (i.e., at the end of adolescence). For peer discrimination, changes in these experiences may be uniquely damaging over time given the intersection of peer salience and emerging identity processes (i.e., grappling with oppression and unfair treatment; Hughes et al. 2016b). Understanding the differential impact of transition points on the development of internalizing symptoms necessitates an individual differences approach that allows modeling of both within person change at specific points in time and how those changes predict subsequent adjustment (Rudolph et al. 2001). The current article takes advantage of a latent change score (LCS) framework that explicitly models changes across time allowing for unique change-to-outcome prediction across time (Castro-Schilo et al. 2016). In other words, an LCS can test whether there are specific increases that are more problematic or “risky” for particular psychological outcomes over time. For the current article, this allows a test of how changes at specific time points (increases or decreases in peer dis- crimination) relative to other time points influence subsequent anxiety and depressive symptoms later in development. This article examined how changes in the interpersonal context at
  • 9. key transition points influence subsequent symptomatology, to decipher whether increases overall are more harmful or there is unique harm from changes at the start of an educa- tional experience. Increases in peer discrimination that are timed at the transition points are hypothesized to be particu- larly harmful, as these would be foundational for engagement in school, potentially leading youth to perceive school as an “inhibiting environment” (Garcia Coll et al. 1996). Current Study The transitions to middle and high school serve as key developmental milestones that are associated with increased psychosocial risk, including potential experi- ences with peer discrimination associated with these transitions. Building off past longitudinal work on peer discrimination predicting internalizing symptoms long- itudinally, this study tests the impact of changes in dis- crimination at specific points in development in a Latinx sample. The current article used an LCS framework to test whether increases in peer discrimination at these educa- tional transition points were associated with greater internalizing symptoms in 12th grade. It was hypothesized that Mexican-origin youth would experience increases in peer discrimination at both the middle school and high school transitions (i.e., 6th to 7th and 8th to 9th). In order to test the uniqueness of the timing effect, changes were examined for every grade, as has been done in previous tests of transition points (e.g., Barber and Olson 2004). Because past work has found greater increases in discrimination in boys relative to girls (e.g., Benner and Graham 2011), the analyses also tested whether biological sex affected these increases. Moreover, it was hypothesized that baseline peer discrimination would be related to more
  • 10. anxiety and depressive symptoms overall, and that increases at the transition to middle and high school would be asso- ciated with greater depressive and anxiety symptoms at 12th grade controlling for symptoms in 5th grade and socio- economic status and nativity. Method Participants and Procedures The current article used data from the California Families Project (CFP), which was granted approval by the University of California at Davis Institutional Review Board (Protocol # 217484-21). CFP is a longitudinal study of Mexican-origin youth and their parents (N = 674) that started in 2006. Chil- dren were drawn at random from rosters of students from the Sacramento and Woodland, CA, school districts (83 different elementary schools). Across the first four waves of data col- lection, the Sacramento school district served a high percen- tage of low-income students (64–71% of students were eligible for free or reduced lunch) and a very diverse ethnic demographic (32–36% Hispanic, 18–21% White, 18–21% Asian, 18–21% African American, 5–9% other; DataQuest 2013). The Woodland school district also served a high per- centage of low-income students (49–63% of students were eligible for free or reduced lunch) and a diverse ethnic demographic (57–63% Hispanic, 28–33% White, 5% Asian, 1% African American, 3–6% other; DataQuest 2013). The focal child had to be in the 5th grade, of Mexican origin, and living with his or her biological mother to participate in the study. Approximately 72.6% of the eligible families agreed to participate in the study. The children (50% female) were assessed annually from 5th (Mage at Wave 1 = 10.86, SD = 0.50) through 12th grade (Mage at Wave 8 = 17.73, SD = 866 Journal of Youth and Adolescence (2019) 48:864–875
  • 11. 0.52). Data collection occurred from 2006 to 2015 for the waves in the present study. Family-level retention rates (relative to the original sample) were 85% at 6th grade, 86% at 7th grade, 89% at 8th grade, 91% at 9th grade, 89% at 10th grade, 90% at 11th grade, and 92% at 12th grade. To investigate the potential impact of attrition, individuals who did and did not participate in the 12th grade assessment on study variables assessed in the 5th grade were compared. No significant differences were found in the study variables or gender, all p’s > 0.10. Participants were interviewed in their homes in Spanish or English, depending on their preference. Interviewers were bilingual and most were of Mexican heri- tage. Across Waves 1 to 8, between 3.9% and 15.0% of the focal children were interviewed in Spanish. Sixty-three per- cent of mothers and 65% of fathers had less than a high school education (median = 9th grade for both mothers and fathers); median total household income was between $30,000 and $35,000 at Wave 1 (overall range of income = < $5000 to >$95,000). With regard to generational status, 83.6% of mothers and 89.4% of fathers were first generation (born outside the United States), and 16.4% of mothers and 10.6% of fathers were born in the United States. Also, 28.5% of children were first generation and 71.5% were born in the United States. At Wave 1, 124 of the families were single- parent households (mothers only), and 549 of the families were two-parent households. Ninety-seven percent of youth transitioned to middle school in 7th grade and the high school transition occurred at 9th grade for all youth. Measures Peer discrimination
  • 12. Three items assessed peer global experiences of discrimination reported by youth at every wave of data collection (Johnston and Delgado 2004), and this measure of peer discrimination has been used in other samples of Mexican-origin youth reviewed above (Delgado et al. 2017). Youth responded on a 4-point Likert-type scale (1 = not at all true to 4 = very true) on items assessing direct and indirect discrimination from peers (i.e., You have heard kids at school making jokes or saying bad things about Mexicans/Mexican-Americans; Kids at school think bad things about Mexicans/Mexican Amer- icans; Kids at school dislike Mexicans/Mexican Americans). Coefficient alpha across waves ranged from 0.74 to 0.81. Anxiety and depressive symptoms The National Institute of Mental Health (NIMH) Diagnostic Interview Schedule for Children-IV (DISC-IV) is a com- monly used measure that assesses 30 different psychiatric diagnoses for children and adolescents (Shaffer et al. 2000). This measure has been validated in both English and Spanish. This study used the child reported Generalized Anxiety Dis- order (GAD; 65 items/12 symptoms) diagnostic section from the Anxiety Disorders module and the Major Depression Disorder (MDD, 256 items/22 symptoms) portion of the Mood Disorders section from the DISC-IV. Children reported whether they had experienced a symptom within the past year (0 = no, 1 = yes). Symptom counts variables were calculated for both GAD and MDD per wave. Only child-reported symptoms were collected in this data set. Covariates The analyses included education, income, and youth nativity (born in Mexico or born in the US) as control variables for the key outcomes of anxiety and depression.
  • 13. Mothers’ and fathers’ educations were reported by mothers in years of schooling (M = 9.26, SD = 3.31) and were included as the average across mothers and fathers, or only mothers when data for fathers were not available. Mothers reported family income in the first wave of data collection using a 20-point scale with $5,000 increments (M = $30,000–$35,000, SD = $15,000–$20,000). Data Analysis A latent change score (LCS) framework was used to explicitly model changes in reported global discrimination from peers across waves of assessment (5th to 12th grades). Higher-order LCS models (Ferrer et al. 2008) allowed for modeling of time-specific, error-free changes that were used as predictors of subsequent psychological outcomes (e.g., Castro-Schilo et al. 2016). This was particularly useful for this investigation because change-to-outcome effects could vary over time. Traditional linear latent growth curve models summarize rates of change in one latent variable (i.e., slope) across all waves of measurement, whereas LCS models enable specification of rates of change from one wave to the next. The multiple change factors provide more granularity to the overall trajectory and can be used to predict future outcomes. To account for measurement error in the latent change factors, a measurement model for discrimination was spe- cified at each measurement occasion. Tests of factorial invariance (Widaman and Reise 1997) were then conducted as a preliminary step to establish that the same construct was modeled over time. The higher-order LCS model can be written as X tð Þn ¼ τx þ λxf tð Þn þ exðtÞn;
  • 14. Y tð Þn ¼ τy þ λyf tð Þn þ eyðtÞn; and W tð Þn ¼ τw þ λwf tð Þn þ ewðtÞn; with Δf tð Þn ¼ μΔðtÞ þ β � f t�1ð Þn þ zΔn; ð1Þ Journal of Youth and Adolescence (2019) 48:864–875 867 where X, Y, and W, are manifest variables for person n at time t, τ, λ, and e are the intercepts, factor loadings, and unique factor scores, respectively, for each observed variable, Δf represents change in factor f at time t, μΔ is the intercept of the change factors at time t, β is a coefficient representing the effect of the factor at the previous state on the change, and zΔn is the residual of latent change. Thus, the score of the latent factor f for person n at any given time t can be written as a function of its initial state plus all the changes accumulated up to time t, as f tð Þn ¼ f0n þ Xt i¼1 Δf ið Þn ! ð2Þ Figure 1 provides a path diagram for the higher-order LCS model. This figure depicts three manifest variables measured across eight occasions. For the repeated assess- ments, new latent variables f(t) are specified to facilitate the higher-order LCS parameterization. With these new latent
  • 15. variables, Δf(t)n are specified, which represent latent changes from one occasion to the next. Latent change factors at each occasion are influenced by the status in a previous time point and by the average trajectory. The degree to which the previous status influences changes is captured by the β coefficients. Analogous to latent growth curve models, means of change factors (μΔf(t)) are also estimated (the mean of the higher-order level is fixed at zero for identification). The factor’s longitudinal trajectory is modeled through latent, error-free changes. Outcomes of change factors and covariates can be included as depicted by the gray boxes. Model Fit and Model Comparisons A chi-square, χ2, comparative fit index (CFI; Bentler 1990) and root mean square error of approximation (RMSEA; Steiger 1990) was used to assess model fit. The χ2 statistic is sensitive to sample size (Bollen 1989), such that models with larger sample sizes tend to result in a significant χ2 (interpreted as significant misfit) despite having appropriate fit to the data; thus, CFI and RMSEA estimates were assessed when considering model fit and conducting model comparisons. CFI values of .95 or greater and RMSEA values of .10 or lower are interpreted as adequate fit (MacCallum et al. 1996). With regard to model compar- isons, a change in CFI and RMSEA of .01 or greater sug- gests a substantial change in model fit (Cheung and Rensvold 2002). Results Descriptive Statistics and Factorial Invariance Three items were available at each wave from 5th to 12th
  • 16. grade, and means varied across items and time points (item means = 1.189–1.639; SD = 0.440–0.856; sample sizes = 565–661). These values suggest that, overall, participants reported low levels of peer discrimination across the dura- tion of the study. Standard recommendations for assessing longitudinal factorial invariance (Widaman and Reise 1997) were followed. After specifying a configural invariance model—that is, one in which the same set of items over time are indicators of multiple time point peer discrimina- tion latent variables—equality constraints were placed on the factor loadings and there was support for weak factorial invariance (Δχ2 = 33.15, Δdf = 14, p = 0.002, ΔCFI = 0.003, ΔRMSEA = 0.000). Next, a test for strong factorial invariance was conducted by placing equality constraints on intercepts over time and found these restrictions tenable (Δχ2 = 30.42, Δdf = 14, p = 0.006, ΔCFI = 0.003, ΔRMSEA = 0.000). Equality constraints on uniquenesses, however, resulted in large deterioration of model fit, as assessed by much larger changes in chi-square, CFI and RMSEA (Δχ2 = 354.49, Δdf = 21, p < 0.001, ΔCFI = 0.058, ΔRMSEA = 0.018). Thus, strict factorial invariance did not hold and the strong invariance model was retained. Fig. 1 Path diagram of higher-order latent change score (LCS) model across eight waves of assessment. Manifest variables are represented by squares. Latent variables are represented by circles. The triangle represents a constant to estimate means and intercepts. Although not depicted in this figure, covariances among unique factors of same manifest variables across time are estimated. Factor loadings, manifest variable intercepts, unique variances, and change factor residual
  • 17. var- iances are represented as invariant over time. Covariates and outcomes are represented as a group in the gray boxes. The second row of factors is specified to facilitate estimation of the model 868 Journal of Youth and Adolescence (2019) 48:864–875 Strong factorial invariance suggests comparable con- ceptualization of peer discrimination over time and enables a meaningfully assessment of longitudinal changes in this process (Widaman and Reise 1997). Peer Discrimination Trajectories A higher-order LCS model was fit to these data to capture the year-to-year changes in peer discrimination. The LCS framework captures error-free changes to get a more accu- rate picture of the trajectories over time. The first specified model was estimated such as that portrayed in black in Fig. 1 (i.e., focusing only on the longitudinal trajectories of perceived peer global discrimination). This model provided good fit to the data, χ2(250) = 518.32, CFI = 0.953, RMSEA = 0.040. This model was compared to one in which the auto-proportion parameters (the beta coefficients in Fig. 1) were constrained to be equal over time, χ2(256) = 534.46, CFI = 0.951, RMSEA = 0.040, and these con- straints did not affect the fit of the model substantially, Δχ2 (6) = 16.14, ΔCFI = 0.002, ΔRMSEA = 0.000. However, comparing the model in Fig. 1 to one with equal means of latent change factors over time, χ2(256) = 625.31, CFI = 0.935, RMSEA = 0.046, suggested such constraints were
  • 18. not tenable, Δχ2(6) = 106.99, ΔCFI = 0.016, ΔRMSEA = 0.006. In sum, the model comparisons suggested that peer discrimination trajectories were best characterized by the model portrayed in Fig. 1 but with equal auto-proportion estimates. Parameter estimates from the final model pointed to significant changes, on average, from 5th to 6th grade, μΔf2 = −0.165, SE = 0.03, p < 0.001, followed by non- significant average changes from 6th to 7th and 7th to 8th grades, μΔf3 = −0.031, SE = 0.03, p = 0.219 and μΔf4 = 0.016, SE = 0.02, p = 0.483, respectively. Thereafter, all changes were statistically significant, including those from 8th to 9th grade, μΔf5 = 0.090, SE = 0.02, from 9th to 10th, μΔf6 = −0.069, SE = 0.02, 10th to 11th grade, μΔf7 = 0.091, SE = 0.02, and 11th to 12th grade, μΔf8 = −0.144, SE = 0.02, all ps < 0.001. Importantly, there was significant variability in peer discrimination at baseline (5th grade) σ2f 0 = 0.123, SE = 0.02, p < 0.001, and also in the residual variance of latent changes, σ2Δ = 0.04, SE = 0.01, p < 0.001, pointing to significant departures from the average trajec- tory across all time points. Furthermore, the auto-proportion coefficient was also significant, b = −0.15, SE = 0.02, p < 0.001. This effect suggests significant negative influences between status on peer discrimination on a given grade and subsequent changes in this construct. Because there are two “forces” dictating individual trajectories of peer dis- crimination—namely, the auto-regressive effect and the mean changes—plotting the model-predicted latent trajec- tories can be useful for interpreting results. These trajectories, from grades 5 to 12 for a random sample of 100 individuals (to facilitate interpretation of the plot), are shown in Fig. 2. The average trajectory in Fig. 2 shows the average
  • 19. decreases in peer discrimination in the first year of the study, followed by two years of stability and a further increase, decrease, increase, and a final decrease during the last year. However, the individual trajectories in this plot also illustrate the departures from the average trajectory for a subset of individuals. For example, some individuals increase in peer discrimination from 5th to 6th grade, which is contrary to the average trajectory. Similar discrepancies with the average trajectory are apparent across time for some individuals, reflecting the significant variability in change over time. To investigate whether girls and boys differ in their perceived peer global discrimination, an additional model was fit in which a binary predictor (0 = male, 1 = female) of the initial level and subsequent latent change factors of peer discrimination were included. Results from this model suggested null effects of gender on baseline (b = −0.08, SE = 0.05, p = 0.147) and changes in trajectories over time (b = 0.04, −0.05, 0.03, −0.06, 0.01, 0.06, −0.01, SE = 0.05, 0.06, 0.05, 0.04, 0.04, 0.04, 0.04, 0.04, p = 0.147, 0.452, 0.326, 0.555, 0.160, 0.776, 0.143, 0.800, for changes from 5th to 6th, 6th to 7th, 7th to 8th, 8th to 9th, 9th to 10th, 10th to 11th, and 11th to 12th grade, respectively). Outcomes of Peer Discrimination Changes The last step in this investigation consisted of unveiling the associations of youths’ patterns of change in peer dis- crimination with future internalizing outcomes. These ana- lyses tested whether levels of peer discrimination at 5th grade and ensuing changes in this construct through 12th grade were predictive of anxiety and depressive symptoms at 12th grade. These analyses accounted for the effect of Fig. 2 Implied model trajectories of peer discrimination from
  • 20. 5th to 12th grades for a randomly selected sample of 100 participants. The thick dotted line represents the average model implied trajectory Journal of Youth and Adolescence (2019) 48:864–875 869 parental education, family income, nativity, and anxiety and depressive symptoms measured at 5th grade (see gray boxes in Fig. 1). Fit indices for this model suggested good fit to these data, χ2(403) = 700.49, CFI = 0.951, RMSEA = 0.033. Regression estimates for the model are listed in Table 1. In line with the hypotheses, results suggest that baseline levels of peer discrimination at 5th grade sig- nificantly predicted anxiety, β = 0.26, b = 1.09, SE = 0.35, p < 0.005, and depressive symptoms, β = 0.25, b = 2.35, SE = 0.76, p < 0.005, 7 years later. Importantly, changes in peer discrimination between grades 7 and 8 (1 year after the transition to middle school) and grades 9 to 10 (1 year after the transition to high school) predicted future anxiety symptoms at 12th grade, β = 0.25 and 0.31, b = 1.70 and 2.07, SE = 0.70 and 0.73, p < 0.05 and <0.01, respectively. Specifically, increases in peer discrimination during those years, and not at other timepoints, were associated with higher levels of anxiety symptomatology in 12th grade. In contrast, none of the latent change factors were predictive of future depressive symptoms. It is important to note the analyses originally also attempted to include teacher discrimination. However, the distributions of the items were highly skewed and initial models either did not converge or produced non-positive
  • 21. definite matrices, thus leading to the focus on peer discrimination. Discussion Due to the negative psychological impact of peer dis- crimination across adolescence, research has attempted to understand the trajectories of peer discrimination in middle and high school aged youth and their relation to mental health functioning, with multiple studies supporting this longitudinal association (Benner et al. 2018). Public health models attempting to understand health inequities have argued for a life course perspective testing whether experiences of discrimination at earlier points in develop- ment may serve as sensitive periods predicting later func- tioning (Acevedo-Garcia et al. 2013). Similarly, transitions to middle and high school have been suggested to serve as potential risks to adolescent functioning (Barber and Olson 2004). However, no past longitudinal study of peer dis- crimination has taken this approach and examined how increases at transition points (i.e., transition to middle and high school) impact subsequent mental health functioning (i.e., depressive and anxiety symptoms). To fill this gap in the literature, this article examined changes in peer dis- crimination across 5th to 12th grades in a Mexican-origin sample. Using a novel statistical technique (LCS), the cur- rent study was able to test whether increases in reports of peer discrimination at particular points in development (i.e., transition to middle school or high school) uniquely pre- dicted internalizing symptom at the end of high school. Consistent with past work, peer discrimination in 5th grade predicted greater symptoms of both depression and anxiety in 12th grade, contributing to the literature on the negative impact of these experiences across adolescence (Benner et al. 2018). Further, there were significant differences in the year-to-year changes in reports of peer discrimination,
  • 22. supporting the need for research to consider how experi- ences of discrimination may change across schooling peri- ods and the need to take a life course perspective that tests potential “sensitive periods” (Acevedo-Garcia et al. 2013). Although there was no support for the hypothesis that increases in peer discrimination immediately after the transitions to middle and high school impact subsequent functioning, increases in peer discrimination in the year after the transition points in schooling were uniquely Table 1 Regression estimates from higher-order latent change score model with internalizing outcomes β b SE z p Predictors of grade 12 anxiety symptoms Baseline grade 5 0.26 1.09 0.35 3.17 0.002 Changes grade 5–6 −0.17 −1.12 0.95 −1.19 0.236 Changes grade 6–7 0.14 0.94 0.73 1.29 0.197 Changes grade 7–8 0.25 1.70 0.70 2.42 0.015 Changes grade 8–9 0.00 0.02 0.69 0.03 0.973 Changes grade 9–10 0.31 2.07 0.73 2.84 0.005 Changes grade 10–11 −0.16 −1.09 0.72 −1.51 0.130 Changes grade 11–12 −0.07 −0.46 0.64 −0.73 0.466 Anxiety symptoms grade 5 −0.02 −0.01 0.04 −0.29 0.771
  • 23. Depression symptoms grade 5 0.12 0.05 0.02 2.52 0.012 Income −0.02 −0.01 0.02 −0.39 0.694 Family education 0.09 0.04 0.02 1.89 0.059 Nativity −0.06 −0.20 0.14 −1.40 0.162 Predictors of grade 12 depression symptoms Baseline grade 5 0.25 2.35 0.76 3.10 0.002 Changes grade 5–6 −0.01 −0.09 1.99 −0.04 0.966 Changes grade 6–7 0.13 1.96 1.62 1.21 0.225 Changes grade 7–8 −0.03 −0.41 1.53 −0.27 0.791 Changes grade 8–9 0.07 0.99 1.50 0.66 0.508 Changes grade 9–10 0.18 2.71 1.54 1.76 0.079 Changes grade 10–11 −0.13 −1.96 1.57 −1.25 0.212 Changes grade 11–12 −0.03 −0.49 1.42 −0.34 0.732 Anxiety symptoms grade 5 0.04 0.07 0.08 0.80 0.426 Depression symptoms grade 5 0.13 0.11 0.04 2.68 0.007 Income −0.03 −0.03 0.04 −0.74 0.462 Family education 0.02 0.02 0.05 0.31 0.754
  • 24. Nativity −0.11 −0.85 0.32 −2.66 0.008 870 Journal of Youth and Adolescence (2019) 48:864–875 predictive of greater anxiety symptoms in 12th grade, while this was not the case for depressive symptoms. Peer Discrimination Trajectories The average trajectory of peer discrimination from 5th to 12th grade suggested stability at the initiation of middle school and an increase at the transition to high school. Overall, this pattern of findings is opposite to what has been documented in recent work examining both schooling per- iods, suggesting increases in peer discrimination in middle school and decreases in high school (Hughes, Del Toro et al. 2016). The different set of findings across both studies could be due to statistical modeling approaches, as the Hughes et al., study did not examine each transition point independently, but instead modeled discontinuous trajec- tories across both time frames. Additionally, the measures of peer discrimination were different with the current measure assessing an overall sense of discrimination rela- tive to the frequency of peer discrimination in the Hughes study. However, it may also be that the discrepant findings resulted from important differences in the samples’ demo- graphics (i.e., multi-ethnic vs. Mexican-origin), location (New York City vs. central valley CA), and schooling contexts (the timing of the transition) that potentially influence the experiences of peer discrimination (Hughes et al. 2016). The Hughes et al., study purposefully selected middle schools based on diversity indices which was not the case for the CFP sample as youth were recruited from two large school districts. Thus, there may have been significant
  • 25. differences in the ethnic/racial composition changes asso- ciated with the middle school transition across both sam- ples, which has been shown to be important for the transition of youth of color (Benner 2011). Finally, work done in California has generally documented increases in peer discrimination, particularly in the high school period (i.e., the current results, Benner and Graham 2011), but work done in New York has failed to find mean level increases (i.e., Hughes et al. 2016a; Sirin et al. 2015; Niwa et al. 2014). Indeed, ethnic concentration in neighborhoods has been shown to influence peer discrimination trajectories (White et al. 2014) suggesting that it will be critical for future work on peer discrimination at school transitions to further consider how context plays a role in the experiences of peer discrimination. The results align with other studies of Latinx adolescents that find increases in reported discrimination during high school (Benner and Graham 2011), and suggest the transi- tion to high school may bring specific risk through increases in discrimination for Latinx youth. However, this risk was not specific to either boys or girls in the current sample, whereas Benner and Graham demonstrated a difference for boys. This may be due to the measures of discrimination, as Benner and Graham did not focus just on peer discrimina- tion and included items that may be more salient for boys (i.e., people were suspicious of you; disciplined unfairly and given detention), as there are demonstrated gendered dis- cipline disparities for Latinx youth (Wallace, Goodkind, Wallace and Bachman 2008). Further, the analyses con- trolled for nativity in our analyses, but future work should consider what other factors (i.e., language use, SES) influ- ence peer discrimination. Peer Discrimination and Symptomatology
  • 26. Not surprisingly, and in line with a growing body of research, baseline peer discrimination predicted worse symptoms in 12th grade, controlling for 5th grade symp- toms. As theorized in models of non-White youth child development (i.e., Garcia Coll et al. 1996), negative peer discriminatory experiences can have far-reaching con- sequences in development. This is one of the few studies that has longitudinally established this relation across such a large range of adolescence (5th to 12th grades) for both symptoms of anxiety and depression and in a solely Latinx sample (see Delgado et al. 2017 for another paper testing depressive symptoms). Future work should unpack the individual and contextual risk and resilience mechanisms that lead to this longitudinal association. For example, a negative perception of school climate may be an important mediator that is associated with changes in the racial/ethnic compositions of school environments and peer discrimination (Benner and Graham 2011) and merits further research attention. Concomitant changes in discrimination and perceptions of school climate may negatively impact psychosocial and academic func- tioning for Latinx youth. Similarly, school attachment and ethnic-racial identity exploration in middle adolescence served to protect Mexican-origin youth from internalizing symptoms in late adolescence (White et al. 2018), and these processes may be important sources of resilience. Further, recent work suggests that the relation between internalizing symptoms and discrimination across adolescence is bidir- ectional (Hou et al. 2015), and more work should endeavor to examine how these processes relate across time, espe- cially for depressive symptoms for which there was no evidence of timing effects. The analyses, however, did find timing effects for
  • 27. symptoms of anxiety and suggests that increases in experiences of peer discrimination at specific points may be critical to understanding the longitudinal interplay of these symptoms and discrimination, albeit not occurring at the year immediately after the transition. Nevertheless, this finding falls in line with life course theories of the impact of racism and suggests that timing effects are important to test (Gee et al. 2012). Increases in peer discrimination in the Journal of Youth and Adolescence (2019) 48:864–875 871 years after both the middle and high school transitions were associated with greater anxiety symptoms in 12th grade suggesting that it is important to consider how experiences of discrimination at these two different schooling intervals function to set up developmental pathways across the remainder of adolescence. Although the transition points did not function as the point of risk, the findings do suggest that both middle and high school may serve as a “sensitive period” where changes have longitudinal ramifications for anxiety symptoms. Overall, adolescence has been posited to serve as a “sensitive period” to social rejection due to functional and structural changes in brain development (Blakemore and Mills 2014). Yet, there has not been a significant amount of work examining “sensitive periods” involved in experiences of discrimination. Transition changes may be particularly demanding for youth with risk for anxiety, as these youth may feel more wary of navi- gating the changing social landscape of their new environ- ment. For example, teasing about ethnicity and race led to greater daily anxiety for youth with already high anxiety and also feelings of social anxiety that were evident for days after the incident (Douglass et al. 2016; 43% Latinx).
  • 28. The findings of the current study suggest, however, that the risk of the transition was not immediate but that changes in the year following the transition were most detrimental. Perhaps this may be due to the fact that youth had to have some significant peer experiences within the new school context for them to characterize their peers as holding these beliefs. Consistent with this notion that it is not the immediate transition that is most detrimental, in a study by Benner and Graham (2009), the transition to high school resulted in increases in school belonging that started dis- sipating in the year following the transition. This suggests that interactions with peers and teachers were necessary to inform their experience of school belonging, which may operate similarly for experiences of peer discrimination. As youth begin to assimilate these experiences, this may lead to increases in the race-based rejection sensitivity (Mendoza-Denton et al. 2002), withdrawal from peer net- works due to avoidance, and disengagement from the school environment culminating in greater symptomatology over time (Erath et al. 2007). Models of health disparities have also highlighted that rumination and anticipation of future discrimination exert a toxic effect on health (i.e., racial vigilance; race rejection sensitivity, Hicken, Kravitz- Wirtz, Durkee, and Jackson 2018). Recent experimental work by Huyhn et al. (2017) with Latinx emerging adults suggests that exposure to indirect discrimination resulted in greater cortisol output in a stress task and poorer recovery, suggesting that altered stress responsivity may be involved in the continued risk for anxiety symptoms overtime. Thus, these changes may be particularly problematic for changes in anxiety symptoms and not as relevant for depressive symptoms, which have more immediate impact. Indeed, using the same measure in different samples of Latinx youth, Berkel and colleagues (2010) demonstrated increases
  • 29. in depressive symptoms in the following time point (2 years later), and Delgado et al. 2017 showed that discrimination in 7th grade impacted increases in depressive symptoms in 9th grade that then had downward trajectories. Future work should continue to examine how peer discrimination serves as risk differentially for depressive and anxiety symptoms, especially given that there is much less work examining anxiety symptoms specifically (Priest et al. 2013), and whether there are other potentially “sensitive period” for other outcomes. Further, future work should also start to identify moderators and mediators of these associations to help lead to preventive efforts. Limitations and Implications The current study contributes to the literature on the life course and peer discrimination through the unique exam- ination of changes across adolescence and their relation to internalizing symptomatology, but there are significant limitations to this current study. First, the data set does not have a measure of changes in the racial/ethnic composition of the schools to test whether these changes were related to changes in reports of peer discrimination. Second, the cur- rent measure of peer discrimination was global in nature and did not capture nuanced experiences of peer discrimination that would potentially be different across gender and nationality. These potential nuanced experiences would be important to consider from an intersectional perspective. In the same vein, this measure did not capture the source of peer discrimination (i.e., other Latinx peers vs. non-Latinx white peers, see Stein et al. 2018) which may also have implications for mental health functioning. Finally, the measure included overall perceptions of peer discrimination (indirect and direct) instead of frequency of personal experiences of discrimination from peers. Thus, changes found in this study related to overall perceptions of peer
  • 30. discrimination and bias are not changes in frequency of personal discrimination, which would also be important to test using LCS. Yet, this measure of discrimination has been used to test developmental trajectories of discrimination in other Latinx samples between 5th and 7th grades (Berkel et al. 2010), 7th grade to post high school (Delgado et al. 2017), and 5th to 10th grades (White et al. 2014). Conclusion Peer discrimination negatively impacts Latinx youth across development in multiple ways, including increasing risk for internalizing symptoms (Berkel et al. 2010). Using a life 872 Journal of Youth and Adolescence (2019) 48:864–875 course perspective, the current study tested whether increases in peer discrimination associated with the transi- tions to middle and high school impacted anxiety and depressive symptoms at the end of high school. This study significantly contributes to the literature on longitudinal trajectories of peer discrimination across adolescence by leveraging a novel statistical technique that allowed for the explicit modeling of changes across time and unique change-to-outcome prediction. The study offers new insights into the understanding of the negative ramifications of peer discrimination by suggesting that increases between 7th and 10th grades predict worse anxiety symptoms across time, pointing to a potentially “sensitive period” that war- rants further investigation. However, contrary to our pre- diction, increases in peer discrimination in the year after the transition were particularly harmful for later anxiety symptoms but not depressive symptoms. This suggests two things: (1) additional work on the impact of schooling
  • 31. transition examining peer interactions should further examine when the risk is most pronounced (i.e, immediately or after some time) and (2) it is important to continue to examine the unique developmental pathways through which discrimination impacts depressive and anxiety symptoms as the current finding suggests that there may be cumulative effects of peer discrimination on anxiety symptoms. Addi- tionally, these findings highlight the importance of schools addressing issues of peer discrimination and adopting zero- tolerance policies about discrimination. Given that one of the three items focused on peers making jokes or saying bad things about Mexicans/Mexican Americans, this suggests that experiences that may be viewed as less harmful or do not involve physical threats still take a significant toll on the mental health of Mexican-origin youth and warrant inter- vention. Youth in general need help from adults to navigate social contexts and create peer ecologies that are supportive, and, given the findings related to peer discrimination in this article, it is clear that adults in schools need to foster sup- portive school cultures where all youth can thrive. In par- ticular, it may be essential for schools to support youth in the year after the transition to new school contexts to assess their experiences of discrimination and pay special attention to interventions at these points. Authors’ Contributions All authors contributed significantly intellec- tually to the current manuscript. G.L.S. conceived the current study from an existing data set, helped plan the statistical analyses, and drafted the majority of the manuscript. L.C. conducted the statistical analyses, wrote the Data Analysis and Results sections, and made the Table and Figures. A.C., Y.M. and K.C. contributed to the
  • 32. literature review, interpretation of data, and manuscript preparation. R.R. con- ceived and designed the original study, secured funding, coordinated data collection, and helped draft the manuscript. All authors read and approved the final manuscript. Funding This research was supported by a grant from the National Institute on Drug Abuse (DA017902) to Richard W. Robins and Rand D. Conger. We thank the participating families, staff, and research assistants who took part in this study. The content is solely the responsibility of the authors and does not represent the official views of the National Institutes of Health. Data Sharing and Declaration The datasets generated and/or analyzed during the current study are not publicly available. Compliance with Ethical Standards Conflict of Interest The authors declare that they have no conflict of interest. Ethical Approval The California Families Project (CFP) was granted ethical approval by the Institutional Review Board (Protocol # 217484-27) of the University of California, Davis. All authors have complied with the American Psychology Association’s ethical
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  • 43. alcohol and substance abuse research (pp. 281–324). Washing- ton, DC: American Psychological Association. Gabriela Livas Stein is an Associate Professor of Clinical Psychology at the University of North Carolina at Greensboro. Her research examines risk and resilience processes including the roles of discrimination, cultural familial values, and racial/ethnic socialization in lives of Latinx families. Laura Castro-Schilo is a Research Statistician Developer at the JMP Division of SAS Institute Inc. Her major research interests include methodology for the study of change and measurement. Alyson Cavanaugh is Research Scientist at Frank Porter Graham at the University of North Carolina at Chapel Hill. Her major research interests include educational, psychological, and cultural experiences of ethnic minority youth. Yesenia Mejia is a doctoral graduate student in Clinical Psychology at University of North Carolina at Greensboro. Her research examines risk and resilience in Latino youth. Keita Christophe is a doctoral graduate student in Clinical Psychology at University of North Carolina at Greensboro. His research examines risk and coping in marginalized youth.
  • 44. Richard Robins is a Professor of Psychology at University of California Davis. His research focuses on the development of personality and its consequences for important life outcomes as well as the development of Mexican-origin youth. Journal of Youth and Adolescence (2019) 48:864–875 875 https://doi.org/10.1007/s10964-014-0098-7 https://doi.org/10.1007/s10964-014-0098-7When Discrimination Hurts: The Longitudinal Impact of Increases in Peer Discrimination on Anxiety and Depressive Symptoms in Mexican-origin YouthAbstractIntroductionPeer Discrimination and Internalizing SymptomsLongitudinal Studies of Peer DiscriminationTransition Points in AdolescenceCurrent StudyMethodParticipants and ProceduresMeasuresPeer discriminationAnxiety and depressive symptomsCovariatesData AnalysisModel Fit and Model ComparisonsResultsDescriptive Statistics and Factorial InvariancePeer Discrimination TrajectoriesOutcomes of Peer Discrimination ChangesDiscussionPeer Discrimination TrajectoriesPeer Discrimination and SymptomatologyLimitations and ImplicationsConclusionCompliance with Ethical StandardsACKNOWLEDGMENTSReferencesA9A10A11A12A1 3A14