Abstract
Rats were conditioned to respond on a schedule in which reinforcements became available every 2 min. After each reinforcement, the lever was retracted for either 40 or 80 sec and reintroduced so that the subject could respond during the final 80 or 40 sec, respectively. Response rates were the same regardless of the interval during which the subjects could respond, but they made more total responses when they could respond for 80 sec. The subjects also made more responses if they had been able to respond only during the final 40 sec of the preceding interval.
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References
Innis, N. K. (1978). Contrast effects in multiple fixed-interval reinforcement schedules. Journal of the Experimental Analysis of Behavior, 29, 233–242.
Meltzer, D. (1987). Sequential effects of interval duration on fixed-interval performance. Journal of the Experimental Analysis of Behavior, 47, 73–80.
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Meltzer, D., Robertson, K. Sequential effects of response-opportunity duration. Bull. Psychon. Soc. 28, 426–428 (1990). https://doi.org/10.3758/BF03334058
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DOI: https://doi.org/10.3758/BF03334058