Stimulus Probability Effects in Absolute Identification

Chris Kent, koen lamberts

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)
479 Downloads (Pure)


This study investigated the effect of stimulus presentation probability on accuracy and response times in an absolute identification task. Three schedules of presentation were used to investigate the interaction between presentation probability and stimulus position within the set. Data from individual participants indicated strong effects of presentation probability on both proportion correct and response times. The effects were moderated by the ubiquitous stimulus position effect. The accuracy and response time data were predicted by an exemplar-based model of perceptual cognition (Kent & Lamberts, 2005). The bow in discriminability was also attenuated when presentation probability for middle items was relatively high, an effect which will constrain future model development. The study provides evidence for item specific learning in absolute identification. Implications for other theories of absolute identification are discussed.
Original languageEnglish
Pages (from-to)740-748
Number of pages9
JournalJournal of Experimental Psychology: Learning, Memory, and Cognition
Issue number5
Publication statusPublished - May 2016

Structured keywords

  • Memory


  • Absolute identification
  • stimulus frequency
  • presentation probability
  • mathematical model
  • exemplar theory


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