A measurement theory of illusory conjunctions

William Prinzmetal, Richard B. Ivry, Diane Beck, Naomi Shimizu

Research output: Contribution to journalArticle


Illusory conjunctions refer to the incorrect perceptual combination of correctly perceived features, such as color and shape. Research on the phenomenon has been hampered by the lack of a measurement theory that accounts for guessing features, as well as the incorrect combination of correctly perceived features. Recently several investigators have suggested using multinomial models as a tool for measuring feature integration The authors examined the adequacy of these models in 2 experiments by testing whether model parameters reflect changes in stimulus factors. In a third experiment, confidence ratings were used as a tool for testing the model. Multinomial models accurately reflected both variations in stimulus factors and observers' trial-by-trial confidence ratings.

Original languageEnglish (US)
Pages (from-to)251-269
Number of pages19
JournalJournal of Experimental Psychology: Human Perception and Performance
Issue number2
StatePublished - Apr 2002


ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Arts and Humanities (miscellaneous)
  • Behavioral Neuroscience

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