Stimulant drugs like caffeine, amphetamines, and cocaine are sometimes considered to increase energy output and are, therefore, called __________ drugs

The pleasure principle is to the reality principle as the _______ is to the _______

a. ego; id b. id; ego c. ego; superego d. id; superego

Electroconvulsive therapy is used to alleviate _______

a. anxiety b. schizophrenia c. somatoform disorders d. severe depression