A Research Psychologist Manipulates the Caffeine Intake (2 Mg,5 Mg,10

Multiple Choice

A research psychologist manipulates the caffeine intake (2 mg,5 mg,10 mg) in human participants in the laboratory and then examines the effect of the different levels of caffeine on the participants' mood.In this study,the mood scores are the __________ variable.

A) dependent
B) correlational
C) independent
D) experimental