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Title

Individuals with 22q11.2 deletion syndrome are impaired at explicit, but not implicit, discrimination of local forms embedded in global structures

Authors
Giersch, Anne
Published in American Journal on Intellectual and Developmental Disabilities. 2014, vol. 119, no. 3, p. 261-275
Abstract Individuals with 22q11.2 deletion syndrome (22q11.2DS) are impaired at exploring visual information in space; however, not much is known about visual form discrimination in the syndrome. Thirty-five individuals with 22q11.2DS and 41 controls completed a form discrimination task with global forms made up of local elements. Affected individuals demonstrated clear impairment in detecting local, but not global, differences. Nevertheless, 22q11.2DS participants easily discriminated the same local elements when they were displayed in isolation, and further use of a prime demonstrated preserved facilitation of local processing in 22q11.2DS. These results did not differ by age or IQ. This study illustrates the impact of visuospatial impairments on form discrimination, and suggests how these difficulties may affect visual scanning in 22q11.2DS.
Keywords AdolescentAdultChildDiGeorge Syndrome/physiopathologyDiscrimination (Psychology)/physiologyFemaleForm Perception/physiologyHumansMalePattern Recognition, Visual/physiologySpace Perception/physiologyVisual Perception/physiologyYoung Adult
Identifiers
PMID: 24871794
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Research groups Laboratoire d'imagerie et de psychopathologie développementale (693)
Unité de psychologie clinique de l'adolescence (UPCA)
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(ISO format)
GIERSCH, Anne et al. Individuals with 22q11.2 deletion syndrome are impaired at explicit, but not implicit, discrimination of local forms embedded in global structures. In: American Journal on Intellectual and Developmental Disabilities, 2014, vol. 119, n° 3, p. 261-275. https://archive-ouverte.unige.ch/unige:40628

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Deposited on : 2014-10-02

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