Longitudinal studies have the theoretical problem that
A) Age is confounded with time of testing
B) It's difficult to recruit people for such a study
C) They are expensive
D) They take a long time to complete

Question

Quizplus · Accepted Answer

Longitudinal studies involve following a group of participants over time, which can lead to the problem of age being confounded with time of testing. In other words, participants' test scores may be influenced not just by their age, but also by when they were tested during the study. This can affect the interpretation of the results and limit the conclusions that can be drawn from the study. The other options (B, C, and D) are practical challenges that can arise with longitudinal studies, but they are not theoretical problems that affect the validity of the results.

Longitudinal Studies Have the Theoretical Problem That