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Perceptual grouping abilities in individuals with autism spectrum disorder; exploring patterns of ability in relation to grouping type and levels of development
Author(s) -
Farran Emily K.,
Brosnan Mark J.
Publication year - 2011
Publication title -
autism research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.656
H-Index - 66
eISSN - 1939-3806
pISSN - 1939-3792
DOI - 10.1002/aur.202
Subject(s) - gestalt psychology , psychology , autism , autism spectrum disorder , nonverbal communication , perception , similarity (geometry) , developmental psychology , orientation (vector space) , contrast (vision) , cognitive psychology , artificial intelligence , neuroscience , geometry , mathematics , computer science , image (mathematics)
This study further investigates findings of impairment in Gestalt, but not global processing in Autism Spectrum Disorder (ASD) [Brosnan, Scott, Fox, & Pye, 2004]. Nineteen males with ASD and nineteen typically developing (TD) males matched by nonverbal ability, took part in five Gestalt perceptual grouping tasks. Results showed that performance differed according to grouping type. The ASD group showed typical performance for grouping by proximity and by alignment, impairment on low difficulty trials for orientation and luminance similarity, and general impairment for grouping by shape similarity. Group differences were also observed developmentally; for the ASD group, with the exception of grouping by shape similarity, perceptual grouping performance was poorer at lower than higher levels of nonverbal ability. In contrast, no developmental progression was observed in the TD controls. Autism Res 2011,4:283–292 . © 2011 International Society for Autism Research, Wiley Periodicals, Inc.