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Early visual tagging : effects of target-distractor similarity and old age on search, subitization, and counting
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Watson, Derrick G., Maylor, Elizabeth A., Allen, Gareth E. J. and Bruce, Lucy A. M. (2007) Early visual tagging : effects of target-distractor similarity and old age on search, subitization, and counting. Journal of Experimental Psychology: Human Perception and Performance, Vol.33 (No.3). pp. 549-569. doi:10.1037/0096-1523.33.3.549 ISSN 0096-1523.
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Official URL: http://dx.doi.org/10.1037/0096-1523.33.3.549
Abstract
Three experiments examined the effects of target- distractor (T-D) similarity and old age on the efficiency of searching for single targets and enumerating multiple targets. Experiment 1 showed that increasing T-D similarity selectively reduced the efficiency of enumerating small (< 4) numerosities (subitizing) but had little effect on enumerating larger numerosities (counting) or searching for a single target. Experiment 2 provided converging evidence using fixation frequencies and a finer range of T-D similarities. Experiment 3 showed that T-D similarity had a greater impact on older than on young adults, but only for subitizing. The data are discussed in terms of the mechanisms and architecture of early visual tagging, dissociable effects in search and enumeration, and the effects of aging on visual processing.
Item Type: | Journal Article | ||||
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Subjects: | B Philosophy. Psychology. Religion > BF Psychology | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Library of Congress Subject Headings (LCSH): | Visual perception, Eye — Movements, Human information processing -- Age factors, Cognition in old age, Cognition — Age factors, Number concept, Numeration | ||||
Journal or Publication Title: | Journal of Experimental Psychology: Human Perception and Performance | ||||
Publisher: | American Psychological Association/Educational Publishing Foundation | ||||
ISSN: | 0096-1523 | ||||
Official Date: | June 2007 | ||||
Dates: |
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Volume: | Vol.33 | ||||
Number: | No.3 | ||||
Number of Pages: | 21 | ||||
Page Range: | pp. 549-569 | ||||
DOI: | 10.1037/0096-1523.33.3.549 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Funder: | Economic and Social Research Council (Great Britain) (ESRC) | ||||
Grant number: | R000239180 (ESRC) |
Data sourced from Thomson Reuters' Web of Knowledge
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