Psychological aspects of pain perception can influence the release of the neurotransmitters called __________, the body's natural version of morphine

Rapid cycling bipolar disorder is characterized by

a. many mood shifts per day. b. a seasonal pattern of symptoms. c. at least four episodes of mania, hypomania, or major depression within a year. d. the development of a manic episode in less than a week.

Positive parental support is associated with all of the following EXCEPT:

A) academic success. B) advanced moral development. C) enthusiastic, impulsive behavior. D) high self-esteem.