PSYC 2210 Chapter : learning and behaviour ch 10
16 Dec 2011
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Generalization gradients: stimulus control- relationship between stimuli and beh, measuring generalization gradients. A pigeon is reinforced to peck at a yellow key for food. Now we wish to measure generalization with a different colour key. Probe trail- briefly present other colour to measure responding but do not. Or begin with the same type of training and follow with a series of extinction trials with both yellow and other colours. give reinforcer. Children were given a 40 second tone, then they were asked to say yes if it was the same tone or no if it was a different tone. Pavlov- generalization is an automatic byproduct of the conditioning process- Lashley and wade- generalization gradients are not innate, they depend of incorrect learning experience. Subjects must receive experience in which reinforcers occur in the presence of one or more colors but not in their absence: how experience affects shape of generalization gradients.
