In which one of the following types of studies is classification of variables as absolutely independent or dependent not possible?
A) Experimental research
B) Correlational research
C) Longitudinal research
D) Ex post facto

Question

Quizplus · Accepted Answer

In correlational research, the variables are not manipulated by the researcher, but rather are simply measured to examine whether they are related to each other. Therefore, it may not be possible to classify variables as absolutely independent or dependent, as the relationships between the variables may be complex and bidirectional.

In Which One of the Following Types of Studies Is