Emile plans a study about the health of deep-sea divers.In determining whether to use a cross-sectional design or a longitudinal design,Emile should ask,"Do I want to know about
A)diver health in a single moment in time,or diver health over time?"
B)just a few divers,or many divers?"
C)several different demographic groups,or just one?"
D)what divers say they do,or what they can be observed doing?"

Question

Quizplus · Accepted Answer

A cross-sectional design examines a subject (or multiple subjects) at a single point in time, while a longitudinal design studies subjects over a period of time to observe changes or developments. Choices B, C, and D relate to sample size, demographic diversity, and data collection methods, respectively, which are separate considerations from the temporal aspect of the study design.

Emile Plans a Study About the Health of Deep-Sea Divers