Basically 3 separate cross-sectional survey but with the same population and research methods** c. Researcher controls: subjects selected, timing of observations d. Researcher knows: what changed, how much i. Don’t know who or why e. Cohort study: with people who share a similar event i. Ex: birth, marriage, divorce 3. Panel study** a. Measures the same population AND the same sample 3 times b. Advantage: can identify who changed and hopefully why c. Disadvantage: population is also changing across time d. Researcher controls: subjects selected, timing of observations e. Researcher knows: what changed, how much change, who changed, why changed (sometimes) f. Follow-up Study: i. Time 1: gather records and data from records ii. Time 2: take sample from people on records and collect new data iii. Repeat g.If panel studies are so good, why doesn’t everyone use it?i.Expensive ii. Subject fatigue iii.Panel attrition: losing people out of your panel (why?) 1. Respondent’s refusal to participate 2. Respondent’s inability to participate 3. Mortality 4. Researcher’s failure to locate respondent (researcher incompetence)
5. Researcher’s failure to keep accurate records (researcher stupidity) 6. Researcher’s failure to interview respondent Common generalization fallacies: o Ecological fallacy – taking group (aggregate) data and applying it to the individual o Reductionist fallacy – taking data from an individual and applying it to a group
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- Fall '08
- researcher, good research question, d. Researcher, Researcher’s failure, e. Researcher