Longitudinal studies suffer from the following pitfalls):
A) selective attrition
B) practice effects
C) regression to the mean
D) all of the above

Question

Quizplus · Accepted Answer

Longitudinal studies, which follow the same subjects over a period of time, can suffer from selective attrition (loss of participants over time), practice effects (participants getting better at test tasks over time), and regression to the mean (extreme scores moving towards the average over time).

Longitudinal Studies Suffer from the Following Pitfalls)