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Selecting and Constructing Data Collection Instruments By Rama Krishna Kompella
Introduction ,[object Object],[object Object],[object Object],[object Object]
Data Collection Strategies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Rules for Collecting Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Rules for Collecting Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Structured Approach ,[object Object],[object Object],[object Object]
Use Structured Approach When: ,[object Object],[object Object],[object Object],[object Object],[object Object]
Semi-structured Approach ,[object Object],[object Object],[object Object],[object Object],[object Object]
Use Semi-structured Approach when: ,[object Object],[object Object],[object Object],[object Object],[object Object]
Characteristics of Good Measures ,[object Object],[object Object],[object Object],[object Object]
Relevance ,[object Object],[object Object]
Credibility ,[object Object]
Internal Validity ,[object Object],[object Object]
Reliability ,[object Object],[object Object],[object Object],[object Object]
Quantitative Approach ,[object Object],[object Object],[object Object],[object Object],[object Object]
Qualitative Approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Which Data? - do not need to quantify the results - are not sure what you are able to measure Qualitative - want narrative or in-depth information - want to cover a large group ,[object Object],[object Object],Quantitative - want to conduct statistical analysis Then Use: If you:
Obtrusive vs. Unobtrusive Methods ,[object Object],[object Object],[object Object],[object Object],[object Object]
How to Decide on Data Collection Approach ,[object Object],[object Object],[object Object]
Triangulation to Increase Accuracy of Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Data Collection Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Tool 1: Participatory Methods ,[object Object],[object Object],[object Object],[object Object],[object Object]
Community Meetings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mapping ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Transect Walks ,[object Object],[object Object],[object Object]
Tool 2: Records and Secondary Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Existing Data Sets ,[object Object]
Advantage/Challenge: Available Data Advantages Often less expensive and faster than collecting the original data again Challenges There may be coding errors or other problems. Data may not be exactly what is needed. You may have difficulty getting access. You have to verify validity and reliability of data
Tool 3: Observation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Observation is Helpful when: ,[object Object],[object Object],[object Object],[object Object]
Degree of Structure of Observations ,[object Object],[object Object],[object Object]
Ways to Record Information from Observations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Guidelines for Planning Observations ,[object Object],[object Object],[object Object],[object Object]
Advantages and Challenges: Observation Advantages Collects data on actual vs. self- reported behavior or perceptions. It is real-time vs. retrospective Challenges Observer bias, potentially unreliable; interpretation and coding challenges; sampling can be a problem; can be labor intensive; low response rates
Tool 4: Surveys and Interviews ,[object Object],[object Object],[object Object],[object Object],[object Object]
Structures for Surveys ,[object Object],[object Object],[object Object],[object Object],[object Object]
Structured vs.  Semi-structured Surveys Structured harder to develop easier to complete easier to analyze more efficient when working with large numbers Semi-structured easier to develop: open ended questions more difficult to complete: burdensome for people to complete as a self-administrated questionnaire harder to analyze but provide a richer source of data, interpretation of open-ended responses subject to bias
Modes of Survey Administration ,[object Object],[object Object],[object Object],[object Object]
Mail / Phone / Internet Surveys ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Advantages and Challenges of Surveys Advantages Best when you want to know what people think, believe, or perceive, only they can tell you that Challenges People may not accurately recall their behavior or may be reluctant to reveal their behavior if it is illegal or stigmatized. What people  think they do  or  say they do  is not always the same as what they  actually do .
Interviews ,[object Object],[object Object],[object Object],[object Object]
Challenges of Interviews ,[object Object],[object Object],[object Object]
Tool 5: Focus Groups ,[object Object],[object Object]
Focus Groups Are Inappropriate when: ,[object Object],[object Object],[object Object],[object Object],[object Object]
Focus Group Process Phase Action 1 Opening Ice-breaker; explain purpose; ground rules; introductions 2 Warm-up Relate experience; stimulate group interaction; start with least threatening and simplest questions 3 Main body Move to more threatening or sensitive and complex questions; elicit deep responses; connect emergent data to complex, broad participation 4 Closure End with closure-type questions; summarize and refine; present theories, etc; invite final comments or insights; thank participants
Advantages and Challenges of Focus Groups Advantages Can be conducted relatively quickly and easily; may take less staff time than in-depth, in-person interviews; allow flexibility to make changes in process and questions; can explore different perspectives; can be fun Challenges Analysis is time consuming; participants not be representative of population, possibly biasing the data; group may be influenced by moderator or dominant group members
Tool 6: Diaries and Self-Reported Checklists ,[object Object],[object Object],[object Object]
Guidelines for Diaries or Journals Step Process 1 Recruit people face-to-face •  encourage participation, appeal to altruism, assure    confidentiality, provide incentive 2 Provide a booklet to each participant •  cover page with clear instructions, definitions, example •  short memory-joggers, explain terms, comments on last    page , calendar 3 Consider the time-period for collecting data •  if too long, may become burdensome or tedious •  if too short may miss the behavior or event
Self-reported Checklists ,[object Object],[object Object],[object Object],[object Object]
Advantages and Challenges of Diaries and Self-reported Checklists Advantages Can capture in-depth, detailed data that might be otherwise forgotten Can collect data on how people use their time Can collect sensitive information Supplements interviews provide richer data Challenges Requires some literacy May change behavior Require commitment and self-discipline Data may be incomplete or inaccurate Poor handwriting, difficult to understand phrases
Tool 7: Expert Judgment ,[object Object],[object Object],[object Object],[object Object]
Selecting Experts ,[object Object],[object Object],[object Object],[object Object],[object Object]
Advantages and Challenges of Expert Judgment Advantages Fast, relatively inexpensive Challenges Weak for impact evaluation May be based mostly on perceptions Value of data depends on how credible the experts are perceived to be
Tool 8: Delphi Technique ,[object Object],[object Object],[object Object],[object Object],[object Object]
Advantages and Challenges of Delphi Technique Advantages Allows participants to remain anonymous  Is inexpensive Is free of social pressure, personality influence, and individual dominance Is conducive to independent thinking Allows sharing of information Challenges May not be representative Has tendency to eliminate extreme positions Requires skill in written communication Requires time and participant commitment
Other Measurement Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Data Collection Summary ,[object Object],[object Object],[object Object]
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T3 data collecting techniques

  • 1. Selecting and Constructing Data Collection Instruments By Rama Krishna Kompella
  • 2.
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  • 4.
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  • 25.
  • 26.
  • 27.
  • 28. Advantage/Challenge: Available Data Advantages Often less expensive and faster than collecting the original data again Challenges There may be coding errors or other problems. Data may not be exactly what is needed. You may have difficulty getting access. You have to verify validity and reliability of data
  • 29.
  • 30.
  • 31.
  • 32.
  • 33.
  • 34. Advantages and Challenges: Observation Advantages Collects data on actual vs. self- reported behavior or perceptions. It is real-time vs. retrospective Challenges Observer bias, potentially unreliable; interpretation and coding challenges; sampling can be a problem; can be labor intensive; low response rates
  • 35.
  • 36.
  • 37. Structured vs. Semi-structured Surveys Structured harder to develop easier to complete easier to analyze more efficient when working with large numbers Semi-structured easier to develop: open ended questions more difficult to complete: burdensome for people to complete as a self-administrated questionnaire harder to analyze but provide a richer source of data, interpretation of open-ended responses subject to bias
  • 38.
  • 39.
  • 40. Advantages and Challenges of Surveys Advantages Best when you want to know what people think, believe, or perceive, only they can tell you that Challenges People may not accurately recall their behavior or may be reluctant to reveal their behavior if it is illegal or stigmatized. What people think they do or say they do is not always the same as what they actually do .
  • 41.
  • 42.
  • 43.
  • 44.
  • 45. Focus Group Process Phase Action 1 Opening Ice-breaker; explain purpose; ground rules; introductions 2 Warm-up Relate experience; stimulate group interaction; start with least threatening and simplest questions 3 Main body Move to more threatening or sensitive and complex questions; elicit deep responses; connect emergent data to complex, broad participation 4 Closure End with closure-type questions; summarize and refine; present theories, etc; invite final comments or insights; thank participants
  • 46. Advantages and Challenges of Focus Groups Advantages Can be conducted relatively quickly and easily; may take less staff time than in-depth, in-person interviews; allow flexibility to make changes in process and questions; can explore different perspectives; can be fun Challenges Analysis is time consuming; participants not be representative of population, possibly biasing the data; group may be influenced by moderator or dominant group members
  • 47.
  • 48. Guidelines for Diaries or Journals Step Process 1 Recruit people face-to-face • encourage participation, appeal to altruism, assure confidentiality, provide incentive 2 Provide a booklet to each participant • cover page with clear instructions, definitions, example • short memory-joggers, explain terms, comments on last page , calendar 3 Consider the time-period for collecting data • if too long, may become burdensome or tedious • if too short may miss the behavior or event
  • 49.
  • 50. Advantages and Challenges of Diaries and Self-reported Checklists Advantages Can capture in-depth, detailed data that might be otherwise forgotten Can collect data on how people use their time Can collect sensitive information Supplements interviews provide richer data Challenges Requires some literacy May change behavior Require commitment and self-discipline Data may be incomplete or inaccurate Poor handwriting, difficult to understand phrases
  • 51.
  • 52.
  • 53. Advantages and Challenges of Expert Judgment Advantages Fast, relatively inexpensive Challenges Weak for impact evaluation May be based mostly on perceptions Value of data depends on how credible the experts are perceived to be
  • 54.
  • 55. Advantages and Challenges of Delphi Technique Advantages Allows participants to remain anonymous Is inexpensive Is free of social pressure, personality influence, and individual dominance Is conducive to independent thinking Allows sharing of information Challenges May not be representative Has tendency to eliminate extreme positions Requires skill in written communication Requires time and participant commitment
  • 56.
  • 57.