Drugs that impair one's sexual response include

Stage 3 NREM and Stage 4 NREM

a. show delta waves. b. are called paradoxical sleep. c. consist of mostly beta waves and a few sleep spindles. d. occur only during the last half of the night.

In choosing a therapist, it would be wise to remember that

a. the therapist's personal qualities may be more important than the type of therapy used. b. psychiatrists are usually better qualified to deal with problems than are psychologists. c. once you begin therapy, you should not consider changing to someone new. d. the training and credentials of a therapist are of little importance.