n. in research, refers to a phenomenon which illustrates the possible consequences of reinforcement. In positive contrast, the response increases for a potentially more-favorable reward after being exposed to a reinforcer which has become less-favorable. In negative contrast, the response decreases for a less-favorable reward after being exposed to a reinforcer which is clearly more-favorable.
BEHAVIORAL CONTRAST: “In behavioral contrast, the rate of responding to stimulus in one setting changes when the condition of reinforcement in the other setting gets modified.”