Among a group of men who were tracked for ten years,those who had scored over 130 on intelligence tests were more likely to suffer severe depression than those who had scored below 130 on intelligence tests.
A)Experiment
B)Retrospective observational study
C)Prospective observational study

Question

Quizplus · Accepted Answer

This is a prospective observational study because the group of men are being tracked over time and their intelligence scores are being recorded and correlated with their likelihood of suffering from severe depression. It is not an experiment as there is no manipulation of variables and it is not a retrospective observational study as data is being collected over a period of time rather than looking back on past events.

Among a Group of Men Who Were Tracked for Ten