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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. 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 |
|---|---|
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
| Divisions: | Faculty of 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 |
| Date: | August 2005 |
| Volume: | Vol.58 |
| Number: | No.6 |
| Number of Pages: | 24 |
| Page Range: | pp. 1119-1142 |
| Identification Number: | 10.1080/02724980443000511 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Funder: | Economic and Social Research Council (Great Britain) (ESRC) |
| Grant number: | R000239180 (ESRC) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/6638 |
Data sourced from Thomson Reuters' Web of Knowledge
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