If you are already in a normal mood, could you make yourself feel even better by taking antidepressant drugs? If not, why not?

a. Yes, you could. Antidepressant drugs are equally effective for everyone.

b. No, you could not. Laws prevent doctors from prescribing antidepressant drugs for anyone who is not depressed.

c. No, you could not. Antidepressant drugs promote new learning that competes with depressed thoughts. Someone without depressed thoughts has little to gain.

d. No, you could not. If people in a normal mood take antidepressants, they experience worse side effects than depressed people do.