The trick used to deal with the confounds 1-the cohort effect and 2- the zeitgeist effect is.

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The trick used to deal with the confounds 1-the cohort effect and 2- the zeitgeist effect is.



Answer: Employ both approaches at the same time. If you find the same results in both cross-sectional and longitudinal research, then the odds of those results both being caused by their own unique confound is very low. For example, if the chance that what is found in a cross-sectional study is really caused by a cohort effect, instead of aging, is about 10%, and the chance that what is found in a longitudinal study is really caused by a time-frame effect, instead of aging, is also about 10%, then the chance of getting the same set of results using both methods could be as low as 1%, which is far below the cut-off for chance (5%) that was allow in psychology.


On the other hand, if you don't get the same results using both methods, then you must be very very cautious as to how you interpret the results. If nothing else, you'll need to figure out which - if either - of the patterns of results is the accurate measure of the effect of aging.

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