Which of the following is a difference between cross-sectional and longitudinal studies?
A)Unlike cross-sectional studies, longitudinal studies are affected by cohort effects.
B)Cross-sectional studies deal with people of the same age, whereas longitudinal studies deal with people belonging to different age groups.
C)Cross-sectional studies assess people at one point in time, whereas longitudinal studies assess people over a long period of time.
D)Cross-sectional studies assess participants multiple times, whereas longitudinal studies assess participants only once.

Question

Quizplus · Accepted Answer

Cross-sectional studies only assess people at one point in time, while longitudinal studies assess people over a long period of time.

Answer: A
 Cohort effects are a concern in longitudinal studies, as people can be influenced by the historical, social, and environmental factors of their time period. Cross-sectional studies do not have this issue since they assess people at one point in time.

Therefore, the best choice is C and A.

Which of the Following Is a Difference Between Cross-Sectional and Longitudinal