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positive reinforcement

1. an increase in the probability of occurrence of some activity because that activity results in the presentation of a stimulus or of some circumstance.

2. the procedure of presenting a positive reinforcer after a response. Compare negative reinforcement.

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Psychology term of the day

February 22nd 2025

excitotoxic lesion

excitotoxic lesion

a lesion caused by paroxysmal overactivity of neurons, which may be associated with seizures or occur after stroke. This is most commonly caused by overstimulation of neurons by excitatory amino acids (see excitotoxicity).