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Extinction
Extinction is from conditioning and refers to the reduction of some response that the organism currently or previously produced. In Classical Conditioning, this results from the Unconditioned Stimulus NOT occurring after the Conditioned Stimulus is presented over time. In Operant Conditioning it results from some response by the organism no longer being reinforced (for example, you keep getting your dog to sit on command, but you stop giving it a treat or any other type of reinforcement. Over time, the dog may not sit every time you give the command).
