| reinforcing stimulus | (n) (psychology) a stimulus that strengthens or weakens the behavior that produced it, Syn. reinforcer, reinforcement |
| negative reinforcing stimulus | (n) a reinforcing stimulus whose removal serves to decrease the likelihood of the response that produced it, Syn. negative reinforcer |
| positive reinforcing stimulus | (n) a reinforcing stimulus that serves to increase the likelihood of the response that produces it, Syn. positive reinforcer |