PSYC 2330 Chapter Notes - Chapter 9: Protein Synthesis Inhibitor, Anisomycin, Exposure Therapy
11 Apr 2013
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Chapter 9 - extinction of conditioned behaviour (p. 300) Extinction can only be conducted after a response or association has been established using pavlovian or instrumental conditioning. Often the goal is to reverse the effects of acquisition. True reversal of acquisition is rare/may not be possible. Extinction does not erase what was originally learned. Extinction involves new learning of an inhibitory s-r association. Inhibition arises from the frustrative effects of the unexpected absence of reward. Intermittent or partial reinforcement permits organisms to learn about non-reward in ways that serve to immunize them against the effects of extinction. In pavlovian conditioning: the outcome or unconditioned stimulus is presented as a consequence of a conditioned stimulus. In instrumental conditioning: the reinforcing outcome is presented as a consequence of the instrumental response. Extinction: involves omitting the us, or reinforce. In classical conditioning: extinction involves repeated presentations of the cs by itself.
