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DISCRIMINATION LEARNING BY MACACA MULATTA WITH OPTION TO SWITCH BETWEEN S+ AND S‐1

Three rhesus monkeys were trained to press either of two response keys. A response on the reinforcement key during presentation of the reinforced stimulus produced a sucrose pellet followed by an intertrial interval, but during presentation of the unreinforced stimulus produced only the intertrial i...

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Bibliographic Details
Published in:Journal of the experimental analysis of behavior 1967-07, Vol.10 (4), p.367-372
Main Authors: Rees, Rod, Schrier, Allan M.
Format: Article
Language:English
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Summary:Three rhesus monkeys were trained to press either of two response keys. A response on the reinforcement key during presentation of the reinforced stimulus produced a sucrose pellet followed by an intertrial interval, but during presentation of the unreinforced stimulus produced only the intertrial interval. A response on the switching key changed the discriminative stimulus from reinforced to unreinforced or from unreinforced to reinforced. The reinforced stimulus was presented automatically on half the trials, but could be produced only by a switching response on the other half. Switching tended to occur in three distinct stages during acquisition of discriminative behavior. The first stage was identified as “nondiscriminative switching”; the second as “nonswitching”; and the third as “discriminative switching”.
ISSN:0022-5002
1938-3711
DOI:10.1901/jeab.1967.10-367