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Activity Sheet 2-A: Age Cohorts
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Imagine that you want to study the effects of television viewing on intelligence between the ages of 10 and 60. Describe the problem of different age cohorts that might arise in a longitudinal study.

Describe the problem for a cross-sectional study.

How could you design the study so that you would not have a problem with age cohorts?

Give another example of a research topic in which age cohorts would be a problem, and describe how it would affect the interpretation of the results.

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