PSYCH-101 Lecture Notes - Lecture 12: Systematic Desensitization, Exposure Therapy, Classical Conditioning
30 Oct 2020
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Period during which a response is being learned. Cs is paired with ucs to establish a strong cr. Fastest: forward trace pairing (cs appears before ucs) Slower: simultaneous pairing (cs appears with ucs) Slowest: backward pairing (cs appears after ucs) Generally strongest when repeated pairings, intense ucs, and sequence involves forward pairing with a short break between cs and ucs. Extinction - if cs is presented repeatedly without ucs, cr will weaken and disappear. Repeated extinction trials will speed up extinction. Spontaneous discovery reappearance of a previously extinguished cr after a rest period, without new learning trials. Cr from spontaneous recovery is usually weaker. Stimulus generalization - once cr is acquired, organism will respond to other stimuli that are similar to original cs. Greater chance for cr in more similar cs. Discrimination when a cr occurs to one stimulus, but not to others.
