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Colour discrimination and categorisation in Williams syndrome

Farran, Emily K., Cranwell, Matthew B., Alvarez, James and Franklin, Anna (2013) Colour discrimination and categorisation in Williams syndrome RESEARCH IN DEVELOPMENTAL DISABILITIES, 34 (10). pp. 3352-3360.

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Abstract

Individuals with Williams syndrome (WS) present with impaired functioning of the dorsal visual stream relative to the ventral visual stream. As such, little attention has been given to ventral stream functions in WS. We investigated colour processing, a predominantly ventral stream function, for the first time in nineteen individuals with Williams syndrome. Colour discrimination was assessed using the Farnsworth-Munsell 100 hue test. Colour categorisation was assessed using a match-to-sample test and a colour naming task. A visual search task was also included as a measure of sensitivity to the size of perceptual colour difference. Results showed that individuals with WS have reduced colour discrimination relative to typically developing participants matched for chronological age; performance was commensurate with a typically developing group matched for non-verbal ability. In contrast, categorisation was typical in WS, although there was some evidence that sensitivity to the size of perceptual colour differences was reduced in this group.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Psychology
Authors :
NameEmailORCID
Farran, Emily K.e.farran@surrey.ac.uk
Cranwell, Matthew B.
Alvarez, James
Franklin, Anna
Date : 1 October 2013
Funders : European Research Grant
DOI : 10.1016/j.ridd.2013.06.043
Copyright Disclaimer : Copyright 2013 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Social Sciences, Science & Technology, Life Sciences & Biomedicine, Education, Special, Rehabilitation, Education & Educational Research, Williams syndrome, Colour discrimination, Colour categorisation, Visual perception, MUNSELL 100-HUE TEST, VISUAL-SEARCH, LIFE-SPAN, CHILDREN, PERCEPTION, ABNORMALITIES, DISORDERS, LOCATION, VISION, AUTISM
Depositing User : Diane Maxfield
Date Deposited : 27 Jun 2019 09:05
Last Modified : 27 Jun 2019 09:05
URI: http://epubs.surrey.ac.uk/id/eprint/850216

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