Extensive Extinction in Multiple Contexts Eliminates the Renewal of Conditioned Fear in Rats

Autor/inn/en	Thomas, Brian L.; Vurbic, Drina; Novak, Cheryl
Titel	Extensive Extinction in Multiple Contexts Eliminates the Renewal of Conditioned Fear in Rats
Quelle	In: Learning and Motivation, 40 (2009) 2, S.147-159 (13 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0023-9690
DOI	10.1016/j.lmot.2008.10.002
Schlagwörter	Therapy; Fear; Animals; Conditioning; Experiments; Learning Processes; Stimuli; Research Methodology + Suchen Sie Ihr Suchwort? Therapie; Furcht; Animal; Tier; Tiere; Erprobung; Learning process; Lernprozess; Anreizsystem; Research method; Forschungsmethode
Abstract	Two studies examined whether nonreinforcement of a stimulus in multiple contexts, instead of a single context, would decrease renewal of conditioned fear in rats (as assessed by conditioned suppression of lever pressing). In Experiment 1, renewal was measured after 36 nonreinforced CS trials delivered during six extinction sessions in a single context or two extinction sessions in each of three different contexts. The number of extinction contexts did not have an effect on renewal. In Experiment 2, groups received either 36 or 144 nonreinforced CS trials during six or twenty-four extinction sessions in a single context or three different contexts. Again, renewal was not influenced by the number of extinction contexts when only 36 trials were given. However, when 144 trials were used, renewal was completely eliminated when extinction was divided between 3 contexts, but was not weakened when the sessions took place in a single context. The results suggest that the use of multiple treatment settings in exposure-based therapies is only likely to reduce relapse if a sufficient number of sessions are provided in each of the treatment settings. (Contains 2 figures and 1 table.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10