Statistical processing: computing the average size in perceptual groups.

Sang Chul Chong; Anne Treisman

doi:10.1016/j.visres.2004.10.004

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Statistical processing: computing the average size in perceptual groups.

Sang Chul Chong·Anne Treisman

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Abstract

This paper explores some structural constraints on computing the mean sizes of sets of elements. Neither number nor density had much effect on judgments of mean size. Intermingled sets of circles segregated only by color gave mean discrimination thresholds for size that were as accurate as sets segregated by location. They were about the same when the relevant color was cued, when it was not cued, and when no distractor set was present. The results suggest that means are computed automatically and in parallel after an initial preattentive segregation by color.

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Attention Color Perception Cues Discrimination, Psychological Humans Judgment Photic Stimulation Psychophysics Sensory Thresholds Size Perception Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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Sang Chul Chong, Anne Treisman. 2005. Statistical processing: computing the average size in perceptual groups.. https://doi.org/10.1016/j.visres.2004.10.004

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