Effects of age on searching for and enumerating targets that cannot be detected efficiently
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 0272-4987Full text not available from this repository.
Official URL: http://dx.doi.org/10.1080/02724980443000511
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|
|Official Date:||August 2005|
|Number of Pages:||24|
|Page Range:||pp. 1119-1142|
|Funder:||Economic and Social Research Council (Great Britain) (ESRC)|
|Grant number:||R000239180 (ESRC)|
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