Contemporary researchers who study memory and learning suggest that we carry with us memories, of which we are not consciously aware, that have a significant impact on our behavior. This supports the ___________

The search for explanations of the etiology of abnormal behavior dates to ancient times. It was not until the nineteenth and twentieth centuries that three major advances occurred: the work of Sigmund Freud, the discovery of general paresis, and the

a. blank slate theory. b. stationary universe model. c. development of the germ theory. d. development of academic psychology.

A teacher gives her class at least one unannounced quiz every week. The students never know which day it will fall on. The teacher is attempting to influence their study habits by using a _____

a) variable-ratio. b) fixed-ratio. c) variable-interval. d) fixed-interval.