部分強化系列の不確定性がレバ-選択と消去抵抗に及ぼす効果

概要

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Sixteen rats were trained in a two-lever box, normally with one lever available at a time. Two levers differed in the reinforcement schedule (random vs. singlealternating sequences) and the subjects were trained for 29 days with successive two blocks of 17 trials on each lever. Prior to the daily training a lever-choice test trial was performed twice. In extinction, rats were extinguished either on formerly randomor alternating-sequence lever. At the end of acquisition, an appreciable preference for the random-sequence lever was observed. Rats also showed a clear patterning on the alternating-sequence lever, responding significantly faster on the reinforced than on the non-reinforced trials. However, no difference was observed during extinction between groups of rats extinguished on a lever of different sequence.
公益社団法人日本心理学会の論文