In most cases, antipsychotic drugs produce the maximum level of improvement within the first _____ of treatment.

The mechanism of action of which drug most closely approximates that of antidepressants such as tricyclic antidepressants or selective serotonin reuptake inhibitors?

a. St. John's wort. b. Ginkgo. c. Kava. d. Valerian.

When practiced as a connected set of movements, tai chi

A) ?is not as beneficial as when practiced as disconnected, discrete movements. B) ?has few physical benefits, but produces many psychological benefits. C) ?is no longer suitable for older people because of safety issues. D) ?provides moderate intensity, low-impact aerobic exercise.