Opiate receptors in the ________ are responsible for the sedation caused by opiate drugs

Lithium carbonate is most frequently used to treat:

a. bipolar disorder b. depression c. schizophrenia d. all of these choices

If people who are more intelligent also tend to be less anxious, we would say that the correlation between the two traits is:

a. positive. b. negative. c. neutral. d. nonexistent.