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Journal of the Experimental Analysis of Behavior logoLink to Journal of the Experimental Analysis of Behavior
. 1970 May;13(3):283–290. doi: 10.1901/jeab.1970.13-283

Signalled and unsignalled free-operant avoidance in the pigeon1

Donald D Foree, Vincent M LoLordo
PMCID: PMC1333666  PMID: 16811443

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.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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