DrWilhelm Randomly Assigned 50 Depressed Patients (Half Women and Half

Multiple Choice

Dr.Wilhelm randomly assigned 50 depressed patients (half women and half men) to two groups for treatment.One group received medication and the other received cognitive therapy.Ratings of the depression level of the subjects were taken before and after treatment.The rating of subjects' depression level is the

A) dependent variable.
B) confound variable.
C) third variable.
D) independent variable.