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Visual processing deficits in children with slow RAN performance

Stainthorp, R. and Stuart, M. and Powell, D. and Quinlan, P. and Garwood, Holly (2010) Visual processing deficits in children with slow RAN performance. Scientific Studies of Reading 14 (3), pp. 266-292. ISSN 1088-8438.

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Two groups of 8- to 10-year-olds differing in rapid automatized naming speed but matched for age, verbal and nonverbal ability, phonological awareness, phonological memory, and visual acuity participated in four experiments investigating early visual processing. As low RAN children had significantly slower simple reaction times (SRT) this was entered as a covariate in all subsequent data analyses. Low RAN children were significantly slower to make same/different judgments to simple visual features, non-nameable letter-like forms and letters, with difference in SRT controlled. Speed differences to letter-like forms and letters disappeared once RTs to simple visual features were controlled. We conclude that slow RAN children have difficulty in discriminating simple visual features that cannot be explained in terms of a more general speed of processing deficit, a deficit in making same/different judgments, or to differences in word reading ability.

Item Type: Article
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Administrator
Date Deposited: 15 Jun 2011 15:47
Last Modified: 17 Apr 2013 12:20

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