Wasting a lot of time opening junk mail, even when the envelope is obviously not a real bill, might reflect __________

It is difficult to assess the damage from illegal drug use during pregnancy because

A) the effects of the drugs wear off within days of delivery. B) many users display other high-risk behaviors. C) public interest in the area has diminished. D) prenatally exposed babies rarely develop lasting problems.

What is the best way to evaluate the effectiveness of psychotherapy? a. Compare people who entered psychotherapy versus those who chose not to. b. Randomly assign people to therapy or a waiting group

c. Evaluate clients before and after therapy, by their self-evaluations. d. Evaluate clients before and after therapy, by the therapist's evaluations.