One highly important finding that attests to the importance of environmental influences on intelligence is that the median IQ score in Western countries __________ in the course of the 20th century.

________ is a repetitive behavior or mental act that an individual feels compelled to perform in response to an anxiety-producing thought

a. Bulimia b. An obsession c. A compulsion d. Rumination e. Schizophrenia

Bob has been under a physician's care for depression

Although his symptoms have disappeared and he has suffered no major side effects, he has had to go on a severely restricted diet since his treatment began and be careful about eating certain smoked, fermented, or pickled foods, and drinking certain beverages. In addition, he needs to be careful about taking other medications due to a risk of severe high blood pressure. Bob's doctor has probably been treating him with __________ a) lithium. b) MAOIs. c) Prozac. d) tricyclics.