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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 Franklin
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.

History

Publication status

  • Published

Journal

Research in Developmental Disabilities

ISSN

0891-4222

Publisher

Elsevier

Issue

10

Volume

34

Page range

3352-3360

Department affiliated with

  • Psychology Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2014-06-18

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