The Japanese Journal of Psychology
Online ISSN : 1884-1082
Print ISSN : 0021-5236
ISSN-L : 0021-5236
THE EFFECTS OF NUMBER OF N-R TRANSITIONS AND PERCENTAGE OF REINFORCEMENT UPON THE PRE FOLLOWING A SMALL NUMBER OF TRAINING TRIALS
MASATO ISHIDA
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1974 Volume 45 Issue 2 Pages 90-94

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Abstract
5 groups of 8 rats each received 5 training trials in a straight alley in order to assess the predictions from the stimulus-aftereffect hypothesis and from the nonconditioning theory of frustration concerning the small-trial PRE. 1N-R and 2N-R transitions were factorially combined with reinforcement percentages of 40 and 60. The 5th group was continuously reinforced for control. The PRE was clearly demonstrated, and the resistance to extinction was an increasing function of the number of N-R transitions. The 40% groups did not differ from the 60% groups. The results were interpreted as supporting the stimulus-aftereffect hypothesis rather than the theory of primary unconditioned frustration.
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© The Japanese Psychological Association
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