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Title: Grouping with and without attention
Authors: Chan, W.Y.
Chua, F.K. 
Issue Date: Dec-2003
Citation: Chan, W.Y., Chua, F.K. (2003-12). Grouping with and without attention. Psychonomic Bulletin and Review 10 (4) : 932-938. ScholarBank@NUS Repository.
Abstract: The effects of perceptual grouping on a line discrimination task were investigated using Moore and Egeth's (1997) paradigm. Observers judged which of two lines, presented one above the other over a matrix of spots, was longer. On some trials, larger spots at both ends of the lines formed arrowheads, thereby making possible the Müller-Lyer illusion. When observers attended only to the lines, they were not aware of the arrowheads. Yet their line judgment performance showed that they had succumbed to the illusion. When the observers' attention was directed to the arrowheads but they nevertheless failed to discern the arrowheads' orientation, their line judgments were still influenced by the illusion.
Source Title: Psychonomic Bulletin and Review
ISSN: 10699384
Appears in Collections:Staff Publications

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