NDLI: Spacing extinction trials alleviates renewal and spontaneous recovery

Content Provider	Springer Nature Link
Author	Urcelay, Gonzalo P. Wheeler, Daniel S. Miller, Ralph R.
Copyright Year	2009
Abstract	Studies of extinction in classical conditioning situations can reveal techniques that maximize the effectiveness of exposure-based behavior therapies. In three experiments, we investigated the effect of varying the intertrial interval during an extinction treatment in a fear-conditioning preparation with rats as subjects. In Experiment 1, we found less fear at test (i.e., more effective extinction) when extinction trials were widely spaced, relative to intermediate or massed extinction trials. In Experiment 2, we used an ABA renewal procedure and observed that spaced trials attenuated renewal of conditioned fear relative to massed trials. In Experiment 3, we used a similar design, but instead of changing the physical context at the time of testing, we interposed a retention interval after the extinction treatment to produce a change in the temporal context. The results showed less spontaneous recovery of fear after spaced than after massed extinction trials. These results suggest that extinction is more enduring when the extinction trials are spaced rather than massed. Although the benefits of spacing trials are small when there is no contextual change from extinction to testing, a change in either physical or temporal context following massed extinction trials leads to a recovery from extinction, which is reduced when the trials are spaced.
Starting Page	60
Ending Page	73
Page Count	14
File Format	PDF
ISSN	00904996
Journal	Learning & Behavior
Volume Number	37
Issue Number	1
e-ISSN	15325830
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Psychology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Behavioral Neuroscience Psychology Animal Science and Zoology Neuropsychology and Physiological Psychology

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