A measurement theory of illusory conjunctions

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

Research output: Contribution to journalArticlepeer-review


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
Externally publishedYes

ASJC Scopus subject areas

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


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