In a Study Conducted by the National Institutes of Mental

In a study conducted by the National Institutes of Mental Health, 240 individuals were randomly assigned to a cognitive therapy group, to an interpersonal therapy group, to a drug therapy group, or to a control group that received a placebo medication along with supportive advice. What were the results of this study?

A) Over 50 percent of the individuals in each of therapy groups were no longer depressed.
B) Over 50 percent of the individuals in the control group were no longer depressed.
C) Seventy-five percent of the individuals in the drug therapy group were no longer depressed, while only 35 percent of the individuals in the psychotherapy groups were no longer depressed.
D) None of the treatments proved to be significantly effective.