SIGNALLED AND UNSIGNALLED FREE‐OPERANT AVOIDANCE IN THE PIGEON1
- 1 May 1970
- journal article
- research article
- Published by Wiley in Journal of the Experimental Analysis of Behavior
- Vol. 13 (3) , 283-290
- https://doi.org/10.1901/jeab.1970.13-283
Abstract
Pigeons were trained to depress a lever to avoid electric shock under free-operant avoidance schedules without a warning signal, or with a warning signal that could be terminated only by a response. Most birds in the signalled avoidance procedure terminated more than 50% of the warning signals before shock. In the unsignalled avoidance procedure, several birds formed a temporal discrimination and received relatively few shocks; other birds responded only in post-shock bursts, and received many more shocks.Keywords
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