A Placebo Is a Commonly Used Control in Drug Studies

Multiple Choice

A placebo is a commonly used control in drug studies. It is also important to use as a control in clinical research on psychotherapies because:

A) people can show spontaneous remission in psychotherapy studies just as they can in drug studies.
B) researchers can examine unwanted side effects of psychotherapies just as they examine such side effects in drug studies.
C) researchers can prevent study participants from showing a negative reaction to a treatment that is actually ineffective.
D) it controls for the expectation that a psychotherapy procedure will produce improvement just as with receiving a drug.