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Acquisition of barpressing in rats following experience with response-independent food |
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| Authors: | Kimbal L Wheatley Robert L Welker Raymond C Miles |
| Institution: | 1. Department of Psychology, Weber State College, 84408, Ogden, Utah 2. Department of Psychology, Mount Holyoke College, 01075, South Hadley, Massachusetts 3. University of Colorado, 80302, Boulder, Colorado |
| Abstract: | In a three-group experiment, one group of rats (response-contingent) learned to contact a food cup for Noyes food pellets delivered according to a fixed-ratio schedule of reinforcement. Subjects in another group received a response-independent pellet each time its yoked counterpart earned one. A third (control) group received the same amount of food as the other two groups each day, but the pellets were delivered in mass. Following this training, the rats were placed in a novel experimental chamber in which all responses on a bar were reinforced with the presentation of food pellets. The results showed the response-independent animals to be slower in acquiring the barpress response than the naive control subjects, and the response-contingent subjects to be the fastest. |
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