Longitudinal Studies Can Be Described as Techniques That

Multiple Choice

Longitudinal studies can be described as techniques that:

A) measure the population at only one point in time.
B) develop an understanding of a phenomenon in terms of "if-then" conditional statements.
C) search for and interpret existing information relevant to the research problem.
D) repeatedly measure the same sample units from the population over a period of time.
E) conduct parallel studies,which allows for comparisons to be made between such studies.