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Effects of age on searching for and enumerating targets that cannot be detected efficiently
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Watson, Derrick G. , Maylor, Elizabeth A. and Bruce, Lucy A. M. (2005) Effects of age on searching for and enumerating targets that cannot be detected efficiently. Quarterly Journal of Experimental Psychology, Section A: Human Experimental Psychology, Vol.58 (No.6). pp. 1119-1142. doi:10.1080/02724980443000511 ISSN 0272-4987.
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Official URL: http://dx.doi.org/10.1080/02724980443000511
Abstract
We investigated the effects of old age on search, subitizing, and counting of difficult-to-find targets. In Experiment 1, young and older adults enumerated targets ( Os) with and without distractors (Qs). Without distractors, the usual subitization-counting function occurred in both groups, with the same subitization span of 3.3 items. Subitization disappeared with distractors; older adults were slowed more overall by their presence but enumeration rates were not slowed by ageing either with or without distractors. In contrast, search rates for a single target (O among Qs) were twice as slow for older as for young adults. Experiment 2 tested and ruled out one account of age-equivalent serial enumeration based on the need to subvocalize numbers as items are enumerated. Alternative explanations based on the specific task differences between detecting and enumerating stimuli are discussed.
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): | Human information processing -- Age factors, Cognition — Age factors, Ability, Influence of age on , Number concept, Numeration | ||||
Journal or Publication Title: | Quarterly Journal of Experimental Psychology, Section A: Human Experimental Psychology | ||||
Publisher: | Psychology Press | ||||
ISSN: | 0272-4987 | ||||
Official Date: | August 2005 | ||||
Dates: |
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Volume: | Vol.58 | ||||
Number: | No.6 | ||||
Number of Pages: | 24 | ||||
Page Range: | pp. 1119-1142 | ||||
DOI: | 10.1080/02724980443000511 | ||||
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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