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Journal of the Experimental Analysis of Behavior logoLink to Journal of the Experimental Analysis of Behavior
. 1972 Sep;18(2):187–199. doi: 10.1901/jeab.1972.18-187

Responding under discrete-trial fixed-interval schedules of reinforcement1

Bruce A Schneider, Allen J Neuringer
PMCID: PMC1334003  PMID: 16811622

Abstract

A fixed-interval schedule of reinforcement was modified by dividing each interval into 4-sec trial periods. No more than one response could occur during each trial because the operandum was inactivated for the remainder of any trial in which a response occurred. For example, under a 28-sec schedule, no more than seven responses could be emitted between reinforcements. Probabilities of responding by pigeons under six values of this discrete-trial fixed-interval schedule were best described by a two-state model: responding was either absent or infrequent immediately after reinforcement; then, at some variable time after reinforcement, there was an abrupt transition to a high and constant probability of responding on each trial. Performances under the discrete-trial procedure were less affected by uncontrolled sources of variance than performances under equivalent free-operant fixed-interval schedules.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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