PSY 111 Lecture Notes - Lecture 17: Classical Conditioning, Psy, Forego
1 Dec 2020
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Classical conditioning learning to associate two stimuli such that one stimulus comes to produce a response that originally was only produced by the other stimulus. Pavlov discovered that when a stimulus is associated with food, dogs will learn to associate the stimulus with food, and will salivate. Tone (cs) + food (ucs) salivation (ucr) 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.
