Abstract
Six groups of male albino rats were given one trial a day for 19 days in a straight runway according to a 3 by 2 design. Schedule of reinforcement was varied in three ways: partial reinforcement with intertriai reinforcement (ITR) after nonrewarded (N) trials, which preceded rewarded (R) trials, partial reinforcement with ITR following selected R trials, and consistent reinforcement with ITR given according to one or the other of the above ITR schedules. The administration of ITR occurred either 2 or 24 h after four designated trials, The results of 24 extinction trials did not support predictions based on the view that the aftereffects of nonreward remain readily replaceable over long periods of time.
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Based on the first author’s Master’s thesis.
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Arnoldt, J.E., Shanab, M.E. The effect of long N-ITR intervals upon the PRE. Psychon Sci 22, 263–264 (1971). https://doi.org/10.3758/BF03335945
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DOI: https://doi.org/10.3758/BF03335945