The establishment of learning sets in rats

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Rats were trained to a criterion on a series of up to 32 shape discriminations in a discrimination box. 3 animals learned all 32 problems, 1 learned only 10, and the remaining 11 animals mastered between 16 and 28 problems. Progressive improvement occurred from problem block to problem block although the rats took many more trials to learn individual problems than do monkeys or most other mammals thus far investigated in learning-set studies. It is suggested that new procedures are needed to facilitate learning of individual problems so that it becomes feasible to present longer series of problems to rats. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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