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. 1976 Sep;26(2):181–190. doi: 10.1901/jeab.1976.26-181

Behavior changes during repeated eight-day extinctions1

Douglas Anger, Kathleen Anger
PMCID: PMC1333504  PMID: 16811939

Abstract

Pigeons were given repeated two-day conditionings alternating with eight-day extinctions using a trial procedure. One group had different key colors during each of the first five conditioning-extinction pairs; another group had the same key color throughout. Total extinction responses of both groups were quite constant over successive extinctions. This finding differs from the rapid declines found in most previous studies with bar-press and key-peck responses. The difference probably was due to our longer extinctions, because responses early in each extinction did decrease. However, that decrease was neutralized by increases in responses late in each extinction. The two opposite changes indicate the influence of two different factors during repeated extinctions, with neither factor having much stimulus specificity. The reduction of early responses may result from feeding changes confounded with extinction. The increase in later extinction responses may result from a decrease in the effect of unreinforced responses after their repeated occurrence.

Keywords: extinction, repeated extinctions, discrimination, key peck, pigeons

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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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