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) studies conducted parallel (longitude) to one another, which allows for comparisons to be made between such studies

Question

Quizplus · Accepted Answer

Longitudinal studies involve repeatedly measuring the same sample units from the population over a period of time, allowing for observation of changes or stability in the studied phenomenon. Other options described different techniques or aspects of research, but did not specifically involve repeated measurements over time.

Longitudinal Studies Can Be Described as Techniques That