Changeover from unsignaled to signaled avoidance with and without a feedback stimulus in rats |
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| Authors: | Pietro Badia Stuart Culbertson |
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| Institution: | 1. Department of Psychology, Bowling Green State University, 43403, Bowling Green, Ohio
2. The American University, 20016, Washington, D.C.
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| Abstract: | Two experiments are reported in which, by pressing a lever, unsignaled avoidable shocks could be changed to signaled avoidable shocks for periods of 1 min, after which unsignaled avoidance was automatically reinstated. A correlated stimulus identified the signaled schedule. Under these conditions, Ss changed over at a rate sufficient to remain in the signaled schedule more than 90% of the time. Both experiments showed that changeover performance was under the control of the correlated stimulus. Presenting the signaled schedule without the correlated stimulus did not maintain changing over. The second experiment showed that a 1-sec presentation of the correlated stimulus was sufficient to maintain changeover performance. The results were attributed to the conditioned reinforcing properties of the correlated stimulus. |
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