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Are Illusory Propositional Conjunctions in Attention-Limited Condition Perceptual Phenomena ?

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
1995, v.7 no.2, pp.43-60
Ji-Eun Han (Ewha Woman's University)
Jung-Oh Kim (Seoul National University)

Abstract

Three experiments examined whether illusory propositional conjunctions (Virzi & Egeth, 1984) are perceptual or post-perceptual phenomena. Experiment 1, using a recall task, demonstrated that illusory propositional conjunctions are observed along with illusory perceptual conjunctions. Using a successive and a simultaneous matching task, Experiment 2 & 3 examined whether illusory propositional conjunctions are dependent on verbal labeling and on memory failure (cf., Treisman & Schmidt, 1982). Illusory propositional conjunctions disappeared but illusory perceptual conjunctions were still observed in both successive and simultaneous matching tasks. These results suggest that contrary to what Virzi & Egeth (1984) claimed, illusory conjunctions occur only with perceptual features.

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The Korean Journal of Cognitive and Biological Psychology