Heroin addiction has been treated with

To explain why, when we have unlimited access to various tasty Foods, we tend to overeat and gain weight, some researchers use the term _____ to indicate a person's base weight level.

A) homeostasis B) basal metabolic rate C) metabolism D) settling point

All of the following are examples of secondary reinforcers EXCEPT

a. money. b. a good grade on a test. c. a drink of water. d. a mother's reassuring glance.