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Operant conditioning of autogrooming in vervet monkeys: Cercopithecus aethiops |
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| Authors: | Iversen I H Ragnarsdottir G A Randrup K I |
| Affiliation: | 1. UNIVERSITY OF COPENHAGEN Southwest Foundation for Biomedical Research, Behavioral Pharmacology Department, P. O. Box 28147, San Antonio, Texas 78284, USA. Southwest Foundation for Biomedical Research, Behavioral Pharmacology Department, P. O. Box 28147, San Antonio, Texas 78284, USA University of Iceland, Midstraeti 8 b, 101 Reykjavik, Iceland University of Copenhagen, Department of Psychology, Njalsgade 94, 2300 Copenhagen S, Denmark;2. UNIVERSITY OF COPENHAGEN University of Iceland, Midstraeti 8 b, 101 Reykjavik, Iceland. Southwest Foundation for Biomedical Research, Behavioral Pharmacology Department, P. O. Box 28147, San Antonio, Texas 78284, USA University of Iceland, Midstraeti 8 b, 101 Reykjavik, Iceland University of Copenhagen, Department of Psychology, Njalsgade 94, 2300 Copenhagen S, Denmark;3. UNIVERSITY OF COPENHAGEN University of Copenhagen, Department of Psychology, Njalsgade 94, 2300 Copenhagen S, Denmark. Southwest Foundation for Biomedical Research, Behavioral Pharmacology Department, P. O. Box 28147, San Antonio, Texas 78284, USA University of Iceland, Midstraeti 8 b, 101 Reykjavik, Iceland University of Copenhagen, Department of Psychology, Njalsgade 94, 2300 Copenhagen S, Denmark |
| Abstract: | Vervet monkeys received food reinforcement contingent on autogrooming. Experiment 1 reinforced grooming on a schedule of increasing intermittency and grooming increased in frequency and duration; with only pauses reinforced, grooming decreased in frequency and duration. Experiment 2 demonstrated differentiation of operant autogrooming; in each session a different single form of grooming was reinforced (for example, grooming the tail only), and that form increased in frequency while other forms became less frequent. In Experiment 3 scratching was succesfully conditioned with a method that selectively reinforced variety in behavior; reinforcement was contingent on a shift in scratching form. In Experiment 4, with no contingencies on grooming, a prefood stimulus did not increase autogrooming whether or not grooming had previously resulted in contingent reinforcement. The form of conditioned autogrooming resembled the form of unconditioned autogrooming. The discussion suggests how reinforcement principles can account for changes in the topography of operant behavior. |
| Keywords: | operant autogrooming operant scratching response differentiation response topography response variety resurgence variable-duration schedule fixed-duration schedule vervet monkeys |
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