Conditioned stimulus determinants of conditioned response form in pavlovian fear conditioning

Stephen D. Kim, Steven Rivers, Rick A. Bevins, John J.B. Ayres

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Four experiments using barpress conditioned suppression in rats found that tone evoked more freezing (immobility) than did light. Still, tone and light appeared to have similar conditioned value as assessed by suppression in Experiments 1, 2, and 3, and by blocking, second-order conditioning, and overconditioning assays in Experiments 1, 2, and 3, respectively. Experiment 4 arranged for tone to evoke less suppression than light but more freezing. Results suggest that in fear conditioning, the nature of the conditioned stimulus affects the form of conditioned responding (strong vs. weak freezing). This conclusion extends one drawn by P. C. Holland (1977) on the basis of his work in appetitive conditioning.

Original languageEnglish (US)
Pages (from-to)87-104
Number of pages18
JournalJournal of Experimental Psychology: Animal Behavior Processes
Issue number1
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Experimental and Cognitive Psychology


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