A treatment approach, based on the principles of operant conditioning, that replaces undesirable behaviors with more desirable ones through positive or negative reinforcement.

Behavior modification is based on the principles of operant conditioning, which were developed by American behaviorist B.F. Skinner (1904-1990). In his research, he put a rat in a cage later known as the Skinner Box, in which the rat could receive a food pellet by pressing on a bar. The food reward acted as a reinforcement by strengthening the rat's bar-pressing behavior. Skinner studied how the rat's behavior changed in response to differing patterns of reinforcement. By studying the way the rats "operated on" their