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Journal of the Experimental Analysis of Behavior logoLink to Journal of the Experimental Analysis of Behavior
. 1963 Jan;6(1):101–107. doi: 10.1901/jeab.1963.6-101

Acquisition of delayed matching in the pigeon1

Robert Berryman, William W Cumming, John A Nevin
PMCID: PMC1404234  PMID: 16811275

Abstract

Pigeons were exposed to three successive matching-to-sample procedures. On a given trial, the sample (red, green or blue light) appeared on a center key; observing responses to this key produced the comparison stimuli on two side keys. Seven different experimental conditions could govern the temporal relations between the sample and comparison stimuli. In the “simultaneous” condition, the center key response was followed immediately by illumination of the side key comparison stimuli, with the center key remaining on. In “zero delay” the center key response simultaneously turned the side keys on and the center key off, while in the “variable delay” conditions, intervals of 1, 2, 4, 10, and 24 sec were interposed between the offset of the sample and the appearance of the comparison stimuli on the side keys. In all conditions, a response to the side key of matching hue produced reinforcement, while a response to the non-matching side key was followed by a blackout. In procedure I all seven experimental conditions were presented in randomly permutated order. After nine sessions of exposure (at 191 trials per session, for a total of 1719 trials) the birds gave no evidence of acquisition in any of the conditions. They were therefore transferred to Procedure II, which required them to match only in the “simultaneous” condition, with both the sample and comparison stimuli present at the same time. With the exception of one bird, all subjects acquired this performance to near 100% levels. Next, in Procedure III, they were once more exposed to presentation of all seven experimental conditions in random order. In contrast to Procedure I, they now acquired the delay performance, and were able to match effectively at delays of about 4 sec.

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Selected References

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

  1. BLOUGH D. S. Delayed matching in the pigeon. J Exp Anal Behav. 1959 Apr;2:151–160. doi: 10.1901/jeab.1959.2-151. [DOI] [PMC free article] [PubMed] [Google Scholar]
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