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Medical Dictionary


noun re·in·force·ment \ˌrē-ən-ˈfōr-smənt, -ˈfȯr-\

Medical Definition of reinforcement

  1. :  the action of causing a subject (as a student or an experimental animal) to learn to give or to increase the frequency of a desired response that in classical conditioning involves the repeated presentation of an unconditioned stimulus (as the sight of food) paired with a conditioned stimulus (as the sound of a bell) and that in operant conditioning involves the use of a reward following a correct response or a punishment following an incorrect response; also :  the reward, punishment, or unconditioned stimulus used in reinforcement—compare recruitment 1

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a division or portion of a pool or whole

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