Overshadowing and blocking as acquisition deficits: No recovery after extinction of overshadowing or blocking cues

Peter C Holland

Research output: Contribution to journalArticle


The effects of extinction of the blocking or overshadowing stimulus on conditioned responding controlled by the blocked or overshadowed stimulus were examined in seven appetitive conditioning experiments with rats. The experiments differed in their designs, stimuli used, the amounts of conditioning and extinction training, and the levels of conditioned responding produced. In all cases, conditioned responding to the blocked or overshadowed cue was either unaffected or reduced by extinction of the blocking or overshadowing cue. These data are consistent with accounts of overshadowing and blocking that attribute those phenomena to acquisition deficits, rather than to retrieval failures.

Original languageEnglish (US)
Pages (from-to)307-333
Number of pages27
JournalQuarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology
Issue number4
Publication statusPublished - Nov 1999
Externally publishedYes


ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Psychology(all)
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology

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