Kirsch and Sapirstein (1999) found that ______ of the effectiveness of antidepressant drugs may reflect the placebo effect rather than any actual changes in brain chemistry.
A) little if any
B) some
C) about half
D) most

Question

Quizplus · Accepted Answer

Kirsch and Sapirstein's study suggests that most of the effectiveness of antidepressant drugs may be due to the placebo effect rather than any actual changes in brain chemistry.

Kirsch and Sapirstein (1999) Found That ______ of the Effectiveness