Effect of overtraining of three discrimination shifts in children

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After discriminative learning to criterion (CR) or overtraining (OT), 6 groups of grade-school children performed reversal (RV), intradimensional (ID), or extradimensional (EX) shift. The relative ease of ID shift suggested the operation of a dimension-specific mediator which, coupled with an increased discrimination of reinforcement change, facilitated RV shift, but not EX shift, under OT condition. Results accord with previously reported over-training effects with rats and have implications for comparative theories of mediated behavior. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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