Which of the following is/are an advantage of longitudinal designs over cross-sectional designs?
A) The power to detect an effect is usually higher for the same number of participants.
B) They prevent cohort effects.
C) They allow for estimates of how individuals change.
D) All of these.

Question

Quizplus · Accepted Answer

Longitudinal designs have the advantage of allowing for estimates of how individuals change over time, which is not possible in cross-sectional designs where different groups are compared at one point in time. Additionally, longitudinal designs can detect within-subject changes more effectively due to the repeated measures of the same individuals, which increases statistical power compared to cross-sectional designs. Finally, by following the same group of individuals over time, longitudinal designs can help control or account for cohort effects, which are differences between groups of people resulting from cultural, social, or historical events.

Which of the Following Is/are an Advantage of Longitudinal Designs