Studies in the US have shown that 30 % of patients with depression respond to placebos; 60-70 % respond to antidepressants; 50 % respond to counseling; and 60-70 % respond to counseling in conjunction with pharmaceuticals. The data shows that talking cures are effective on their own.
根據美國的一項統計，憂鬱症患者，吃「誘餌」安慰劑的對照組中，30％有效；吃抗憂鬱藥 60 ∼ 70％有效；心理治療 50％有效；心理治療加上吃藥 60 ∼ 70％有效。