Matching-to-sample by pigeons: the dissociation of comparison choice frequency from the probability of reinforcement.

Full Abstract

It has been proposed that comparison choice in matching-to-sample should depend on two factors, the relative probability of reinforcement associated with each of the comparison stimuli and the conditional probability of each comparison stimulus being correct given presentation of one of the samples. DiGian and Zentall [DiGian, K.A., Zentall, T.R., 2007. Matching-to-sample in pigeons:
in the absence of sample memory, sample frequency is a better predictor of comparison choice than the probability of reinforcement for comparison choice. Learn Behav. 35, 242-261] have shown that sample frequency together with the probability of choosing each of the comparison stimuli in training can influence comparison choice when delays are introduced, when the number of reinforcements associated with each of the comparison stimuli is equated. Furthermore, Zentall and Clement [Zentall, T.R., Clement, T.S., 2002. Memory mechanisms in pigeons:
Evidence of base-rate neglect. J. Exp. Psych.:
Anim. Behav. Proc. 28, 111-115] have found that sample frequency can affect comparison choice when delays are introduced independently of the number of choices of each of the comparison stimuli in training and the number of reinforcements associated with each of the comparison stimuli is equated. In the present experiment we found that the probability of choosing each of the comparison stimuli in training can affect comparison choice when delays are introduced, independently of sample frequency and when the number of reinforcements associated with each of the comparison stimuli is equated. Together, these experiments suggest that when the sample is not available, there is a partial dissociation between comparison choice and the probability of reinforcement associated with each of the comparison stimuli.

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Author information

Author/s: Zentall, Thomas R (TR); Singer, Rebecca A (RA); Miller, Holly C (HC);

Affiliation: Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, United States. zentall(-atsign-)uky.edu

Grants: MH-063726 (Agency:United States NIMH) ; MH-077450 (Agency:United States NIMH)

Journal and publication information

Publication Type: Journal Article; Research Support, N.I.H., Extramural

Journal: Behavioural processes (Behav Processes), published in Netherlands. (Language: eng)

Reference: 2008-Jun; vol 78 (issue 2) : pp 185-90

Dates: Created 2008/04/28; Completed 2008/07/25;

PMID: 18325692, status: MEDLINE (last retrieval date: 11/6/2008)

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