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CHH 12
| Term | Definition |
|---|---|
| avoidance contingency | A contingency in which a response prevents or postpones the presentation of a stimulus. |
| conditioned negative reinforcer | A previously neutral stimulus change that functions as a negative reinforcer because of prior pairing with one or more negative reinforcers. |
| discriminated avoidance | A contingency in which responding in the presence of a signal prevents the onset of a stimulus from which escape is a reinforcer. |
| escape contingency | A contingency in which a response terminates (produces escape from) an ongoing stimulus. |
| free-operant avoidance | A contingency in which responses at any time during an interval prior to the scheduled onset of an aversive stimulus delays the presentation of the aversive stimulus. |
| negative reinforcement | A contingency in which the occurrence of a response is followed immediately by the termination, reduction, postponement, or avoidance of a stimulus, and which leads to an increase in the future occurrence of similar responses. |
| unconditioned negative reinforcer | A stimulus that functions as a negative reinforcer as a result of the evolutionary development of the species (phylogeny); no prior learning is involved (e.g., shock, loud noise, intense light, extreme temperatures, strong pressure against the body). |