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Frequency and implications of exposure to violent websites on youth behavior
1. Frequency and implications of exposure
to violent web sites on youth behavior
Michele L Ybarra MPH PhD
Internet Solutions for Kids, Inc.
Philip J Leaf PhD
Marie Diener-West PhD
Johns Hopkins University Bloomberg School of Public Health
Merle Hamburger PhD
Centers for Disease Control and Prevention
International Society for Research on Aggression, July
2008, Budapest, Hungary
* Thank you for your interest in this presentation. Please
note that analyses included herein are preliminary. More
recent, finalized analyses may be available by contacting
CiPHR for further information.
2. Background
An estimated 97% of youth use the
Internet (Lenhart, Madden & Hitlin, 2005; USC Annenberg
School Center for the Digital Future, 2005).
The majority of adolescent Internet-
health research has focused on
victimization (e.g., Finkelhor, Mitchell, Wolak, 2000; Wolak,
Mitchell, Finkelhor, 2006; Ybarra, Mitchell, Wolak, Finkelhor, 2006)
and health seeking behavior (e.g., Grey,
Klein, Noyce et al., 2005; Ybarra & Suman, 2006).
3. Problem Statement
As our understanding of associations between media
violence and youth violent and aggressive behavior
continues to grow, there continues to be a noticeable
dearth of research about media violence consumed by
young people on the Internet.
What is the frequency of exposure to violence
online?
Is this online violence related to violent or
aggressive behavior?
4. Definitions
A “hate” site is one that tells you to hate a
group of people because of who they are,
how they look, or what they believe.
A “death” website that shows pictures of
dead people or people dying. Some people
call these “snuff” sites.
A “satanic” website shows satanic rituals,
like devil worship or Satan worship
5. Frequency of exposure
3% 2%
5% 4% 2% 2%
41%
51%
32%
42% 40%
51%
56%
47%
63%
54%
57%
47%
0%
10%
20%
30%
40%
50%
60%
70%
Hate
Sites Y1
Hate
Sites Y2
Death
sites Y1
Death
sites Y2
Santanic
sites Y1
Satanic
sites Y2
Yes
No
I've never heard of this
6. Online exposure to hate and death sites
across age and time
5% 5%
9%
10%
14%
7%
6%
9%
3%
8%
7% 6%
11%
8%
2%
6%
5%
9%
7%
6%
0%
5%
10%
15%
20%
25%
10 11 12 13 14 15 16 17
YISS-1 (2000): 9%
GuwM W1 (2006): 7%
GuwM W2 (2007): 6%
7. How did they hear about the web site?
(top 3 in 2007)
Hate sites:
Friend (50%),
Link from another site (22%),
Typed it in (17%)
Death sites:
Friend (71%),
Search engine (31%),
Email (30%)
Satanic sites:
Banner ad (22%),
Friend (19%),
Email (17%)
8. Demographic profile of youth looking
at hate, death, satanic sites
Among 1,206 11-16 year old youth in Oct-Dec,
2007:
14.2 years old (OR = 1.2, p<.02)
48% male (OR = 0.85, p<.64)
73% are White (OR = 0.97, p=0.94)
17% are Hispanic (OR = 1.1, p=0.79)
9. Definitions
A website, including news-related sites, that
shows pictures of war, death, “terrorism”
A website (that’s not an online game) that
shows cartoons, like stick people or animals,
being beat up, hurt, or killed
10. Frequency of exposure
24% 22% 21%
18%
45%
49%
37%
46%
31% 29%
42%
36%
0%
10%
20%
30%
40%
50%
60%
70%
News sites Y1 New sites Y2 Cartoon sites
Y1
Cartoon sites
Y2
Yes
No
I've never heard of this
11. How did they hear about the web site?
(top 3 in 2007)
News sites:
Friend (26%)
Family (25%)
Search engine (22%)
Cartoon sites:
Friend (73%),
Link from another site (22%)
Search engine (20%)
12. Main outcome measure: Seriously
violent behavior
Any seriously violent behavior: 4.8%
Ever shot/stabbed someone: 1.0%
Aggravated assault
Threatening someone with a weapon: 1.8%
Hurt someone badly enough to require medical
attention: 2.4%
Robbery: 1.3%
Sexual assault: 2.4%
Alpha = 0.87
13. Odds of youth reporting externalizing behavior given
exposure to at least one type of online violent
exposure versus all other youth: Y1 -> Y1
Any exposure
to violent web
sites
(hate, death,
cartoon, or
satanic sites)
Seriously violent
behavior
Physical fights Physical
bullying
Relational
bullying
Odds
Ratio
P-
value
Odds
Ratio
P-value Odds
Ratio
P-value Odds
Ratio
P-
value
All youth
(n=1,588)
2.01 0.02 2.46 <.001 2.61 <.001 2.17 <.001
Males
(n=796)
1.00 0.98 1.86 0.01 2.32 <.001 2.71 <.001
Females
(n=792)
5.57 <.001 3.10 <.001 2.49 0.001 1.74 0.04
Adjusted for age, self-reported honesty, and self-reported privacy in completing the survey
14. Odds of youth reporting externalizing behavior given
exposure to at least one type of online violent
exposure versus all other youth: Y2 -> Y2
Any exposure
to violent web
sites
(hate, death,
cartoon, or
satanic sites)
Seriously violent
behavior
Physical fights Physical
bullying
Relational
bullying
Odds
Ratio
P-
value
Odds
Ratio
P-value Odds
Ratio
P-value Odds
Ratio
P-
value
All youth
(n=1,206)
3.37 0.001 3.70 <.001 5.91 <.001 1.62 0.03
Males
(n=606)
2.41 0.07 3.06 <.001 6.18 <.001 1.46 0.19
Females
(n=600)
5.47 0.002 4.68 <.001 4.72 <.001 2.57 0.007
Adjusted for age, self-reported honesty, and self-reported privacy in completing the survey
15. Odds of youth reporting externalizing behavior given
exposure to at least one type of online violent
exposure versus all other youth: Y1 -> Y2
Any exposure
to violent web
sites
(hate, death,
cartoon, or
satanic sites)
Seriously violent
behavior
Physical fights Physical
bullying
Relational
bullying
Odds
Ratio
P-
value
Odds
Ratio
P-value Odds
Ratio
P-value Odds
Ratio
P-
value
All youth
(n=1,206)
4.18 <.001 1.92 .004 2.47 <.001 1.25 0.28
Males
(n=606)
5.04 <.001 1.66 0.07 2.46 .001 1.22 0.46
Females
(n=600)
2.45 0.09 1.91 0.10 2.05 0.05 1.57 0.16
Adjusted for age, self-reported honesty, and self-reported privacy in completing the survey
16. Summary
Older youth are more likely to seek out
violent web sites, but there are no apparent
differences between boys and girls
Across violent web sites, friends are almost
always the most common source of learning
about the site
17. Summary
37% report exposure to violence on at least
one type of web site in the last year at Year 1
(24% if news sites are excluded); 32% report any
exposure in Year 2 (19% if news sites are excluded)
The 1-year prevalence rates of exposure to
death, hate and satanic sites are low: 2-4%
News-related sites (24%) and cartoon violence
sites (21%) are the two most common
exposures
18. Summary
Exposure to violent web sites is associated with
increased odds for reporting seriously violent
and other aggressive behaviors, both
concurrently and over time.
19. Limitations
(In addition to those noted in the previous
presentation)
It’s possible that “heard” was taken literally (i.e.,
“I’ve never heard of that”)
Our measures are crude (ever/never) and don’t
measure the frequency of exposure
20. Discussion
Despite the wide availability of violent
exposures online
The majority of youth (63-68%) are not exposed
to violence online.
21. Discussion
The majority of youth who are exposed, do not
also report seriously violent behavior or other
types of externalizing behaviors.
Nonetheless, findings suggest that for some
youth, violence online is associated with
externalizing behavior offline.
22. Implications for youth violence
prevention
Simply *knowing* about these types of web
sites is not enough for a youth to visit the web
site.
We need to examine further why some youth
choose to look at these sites when others
don’t.
23. Implications for youth violence
prevention
Intriguing sex differences in the associations
between exposure to violence online and
expression of violent and aggressive
behaviors need to be examined further.
Professionals working with violent and
aggressive youth need to be aware of their
exposures online, especially using newer
technologies (MySpace, YouTube).
Notes de l'éditeur
Among those who report that SNS is where they spend the majority of their time (i.e., is in their ‘top two’), the rate of solicitation decreased from 27% to 22%. The rate in SNS remained stable (15%).
We now have data from four samples that allow us to map the frequency of unwanted sexual solicitation. When we do so (above), we very clearly see a pattern in which those youth 14-15 years of age and older are much more likely than their younger peers to be involved. Note that this age group is also normatively and developmentally appropriately becoming curious about sex.
Rates appear to be stabilizing. For both ‘ever harassed’ in the last year, and ‘harassed monthly or more often’, the same percentage of youth reported being affected in 2006 and in 2007.
Sample mean age is 12.6
Among those who report that SNS is where they spend the majority of their time (i.e., is in their ‘top two’), the rate of solicitation decreased from 27% to 22%. The rate in SNS remained stable (15%).
Rates appear to be stabilizing. For both ‘ever harassed’ in the last year, and ‘harassed monthly or more often’, the same percentage of youth reported being affected in 2006 and in 2007.
28% report 31-1hour 24% report half hour or less 22% report 1-2 hours
Relational bullying = social exclusion and spreading rumors Physical bullying = shoved, pushed or hit someone Physical fights= been in a fight in which someone was hit, been in a group fight
Remember that 4.8% of youth reported seriously violent behavior at Wave 1 76% response rate in the general sample, But 61% among those who reported seriously violent behavior – so those reporting seriously violent behavior were somewhat less likely to participate in Wave 2