B. Kent Parker, Sherry L. Serdikoff, Barbara J. Kaminski, Thomas S. Critchfield

Research output: Contribution to journalArticle


Two experiments were conducted using an autoshaping procedure with pigeons to examine whether dimensional stimulus control by a Pavlovian facilitator parallels the control established following operant discrimination training. Facilitation training consisted of the presentation of a black vertical line on a white background as the B stimulus in a feature‐positive discrimination in which the A stimulus (white keylight) was followed by grain presentation only if preceded by B. In this way, B facilitates or sets the occasion for pecking at A. Subsequent testing for generalization along the line‐orientation dimension produced decremental gradients when the facilitation paradigm incorporated an explicit feature‐negative stimulus (B‐). These results parallel the decremental control obtained following operant discrimination training and suggest that Pavlovian facilitators and instrumental discriminative stimuli are functionally equivalent. 1991 Society for the Experimental Analysis of Behavior

Original languageEnglish (US)
Pages (from-to)275-286
Number of pages12
JournalJournal of the Experimental Analysis of Behavior
Issue number3
StatePublished - 1991
Externally publishedYes


  • discriminative stimulus
  • facilitation
  • generalization
  • key peck
  • line tilt
  • Pavlovian feature‐positive discrimination
  • pigeon

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Behavioral Neuroscience

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