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ERIC Number: EJ1029788
Record Type: Journal
Publication Date: 2014-May
Pages: 15
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-1944-7515
Individuals with 22q11.2 Deletion Syndrome Are Impaired at Explicit, but Not Implicit, Discrimination of Local Forms Embedded in Global Structures
Giersch, Anne; Glaser, Bronwyn; Pasca, Catherine; Chabloz, Mélanie; Debbané, Martin; Eliez, Stephan
American Journal on Intellectual and Developmental Disabilities, v119 n3 p261-275 May 2014
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.
American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A