When researchers are studying differences between soldiers who have been to Iraq and those who have not, the researchers are studying the effects of ______.
A) subject variables
B) convenience variables
C) experimental variables
D) manipulated variables

Question

Quizplus · Accepted Answer

Soldiers who have been to Iraq and those who have not are already pre-selected subjects based on a characteristic (deployment to Iraq). Therefore, this characteristic represents a subject variable - a characteristic that is inherent to the subjects being studied. The other options (B, C, D) refer to variables that can be manipulated or controlled by the researcher in an experimental setting.

When Researchers Are Studying Differences Between Soldiers Who Have Been