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Colour discrimination and categorisation in Williams syndrome
journal contribution
posted on 2023-06-08, 17:37 authored by Emily K Farran, Matthew B Cranwell, James Alvarez, Anna FranklinAnna FranklinIndividuals 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.
History
Publication status
- Published
Journal
Research in Developmental DisabilitiesISSN
0891-4222Publisher
ElsevierExternal DOI
Issue
10Volume
34Page range
3352-3360Department affiliated with
- Psychology Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2014-06-18Usage metrics
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