Counterconditioning versus forced exposure in extinction of avoidance responding and conditioned fear in rats

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Abstract

Conducted 2 experiments using 64 and 32 male Long-Evans hooded rats, respectively. Exp. I investigated the extinction of the conditioned avoidance response (CAR) by response prevention and counterconditioning methods. Response prevention was most effective in extinguishing both the CAR and associated conditioned fear, although counterconditioning produced greater extinction than the regular extinction procedure. Exp. II equated the counterconditioning and response-prevention conditions for duration of CS exposure and demonstrated the superiority of the latter in extinguishing the CAR; both methods were equally effective in decreasing conditioned fear as compared to the regular extinction procedure. Extinction of the CAR was facilitated to the extent to which different procedures eliminated response-contingent feedback by reducing escape-avoidance responses. Conditioned fear was a function of the amount of nonreinforced exposure to the CS during extinction. (24 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)105-114
Number of pages10
JournalJournal of comparative and physiological psychology
Volume82
Issue number1
DOIs
StatePublished - Jan 1 1973

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Keywords

  • conditioned fear, rats
  • counterconditioning vs. forced exposure, extinction of avoidance responding &

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