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Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder / Nicole J. RINEHART in Journal of Child Psychology and Psychiatry, 41-6 (September 2000)
[article]
Titre : Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur Année de publication : 2000 Article en page(s) : p.769-778 Langues : Anglais (eng) Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778[article] Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder [Texte imprimé et/ou numérique] / Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur . - 2000 . - p.769-778.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778
Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125 Evidence of Reduced Global Processing in Autism Spectrum Disorder / R. D. L. BOOTH in Journal of Autism and Developmental Disorders, 48-4 (April 2018)
[article]
Titre : Evidence of Reduced Global Processing in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : R. D. L. BOOTH, Auteur ; Francesca HAPPE, Auteur Article en page(s) : p.1397-1408 Langues : Anglais (eng) Mots-clés : Asd Fragmented Picture-Completion Impossible-Figures Local-global processing Weak central coherence (wCC) Index. décimale : PER Périodiques Résumé : Frith's original notion of 'weak central coherence' suggested that increased local processing in autism spectrum disorder (ASD) resulted from reduced global processing. More recent accounts have emphasised superior local perception and suggested intact global integration. However, tasks often place local and global processing in direct trade-off, making it difficult to determine whether group differences reflect reduced global processing, increased local processing, or both. We present two measures of global integration in which poor performance could not reflect increased local processing. ASD participants were slower to identify fragmented figures and less sensitive to global geometric impossibility than IQ-matched controls. These findings suggest that reduced global integration comprises one important facet of weak central coherence in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2724-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352
in Journal of Autism and Developmental Disorders > 48-4 (April 2018) . - p.1397-1408[article] Evidence of Reduced Global Processing in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / R. D. L. BOOTH, Auteur ; Francesca HAPPE, Auteur . - p.1397-1408.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 48-4 (April 2018) . - p.1397-1408
Mots-clés : Asd Fragmented Picture-Completion Impossible-Figures Local-global processing Weak central coherence (wCC) Index. décimale : PER Périodiques Résumé : Frith's original notion of 'weak central coherence' suggested that increased local processing in autism spectrum disorder (ASD) resulted from reduced global processing. More recent accounts have emphasised superior local perception and suggested intact global integration. However, tasks often place local and global processing in direct trade-off, making it difficult to determine whether group differences reflect reduced global processing, increased local processing, or both. We present two measures of global integration in which poor performance could not reflect increased local processing. ASD participants were slower to identify fragmented figures and less sensitive to global geometric impossibility than IQ-matched controls. These findings suggest that reduced global integration comprises one important facet of weak central coherence in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2724-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352 Perceptual Processing among High-functioning Persons with Autism / Laurent MOTTRON in Journal of Child Psychology and Psychiatry, 40-2 (February 1999)
[article]
Titre : Perceptual Processing among High-functioning Persons with Autism Type de document : Texte imprimé et/ou numérique Auteurs : Laurent MOTTRON, Auteur ; Jacob A. BURACK, Auteur ; Johannes E.A. STAUDER, Auteur ; Philippe ROBAEY, Auteur Année de publication : 1999 Article en page(s) : p.203-211 Langues : Anglais (eng) Mots-clés : Autistic disorder hierarchical stimuli local-global processing perception Index. décimale : PER Périodiques Résumé : Two tasks were used to assess the processing of whole versus parts of objects in a group of high-functioning children and adolescents with autism (N = 11) and a comparison group of typically developing peers (N = 11) matched for chronological age and IQ. In the first task, only the children with autism showed a global advantage, and the two groups showed similar interference between levels. In the second task, the children with autism, despite longer RTs, showed similar performance to the comparison group with regard to the effect of goodness on visual parsing. Contrary to expectations based on the central coherence and hierarchisation deficit theories, these findings indicate intact holistic processing among persons with autism. The implications of these findings are discussed in relation to apparently discrepant evidence from other studies. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=124
in Journal of Child Psychology and Psychiatry > 40-2 (February 1999) . - p.203-211[article] Perceptual Processing among High-functioning Persons with Autism [Texte imprimé et/ou numérique] / Laurent MOTTRON, Auteur ; Jacob A. BURACK, Auteur ; Johannes E.A. STAUDER, Auteur ; Philippe ROBAEY, Auteur . - 1999 . - p.203-211.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 40-2 (February 1999) . - p.203-211
Mots-clés : Autistic disorder hierarchical stimuli local-global processing perception Index. décimale : PER Périodiques Résumé : Two tasks were used to assess the processing of whole versus parts of objects in a group of high-functioning children and adolescents with autism (N = 11) and a comparison group of typically developing peers (N = 11) matched for chronological age and IQ. In the first task, only the children with autism showed a global advantage, and the two groups showed similar interference between levels. In the second task, the children with autism, despite longer RTs, showed similar performance to the comparison group with regard to the effect of goodness on visual parsing. Contrary to expectations based on the central coherence and hierarchisation deficit theories, these findings indicate intact holistic processing among persons with autism. The implications of these findings are discussed in relation to apparently discrepant evidence from other studies. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=124 Change detection of meaningful objects in real-world scenes in adolescents with and without autism spectrum disorder / S. VANMARCKE in Autism, 22-6 (August 2018)
[article]
Titre : Change detection of meaningful objects in real-world scenes in adolescents with and without autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : S. VANMARCKE, Auteur ; I. NOENS, Auteur ; J. STEYAERT, Auteur ; J. WAGEMANS, Auteur Article en page(s) : p.728-739 Langues : Anglais (eng) Mots-clés : autism spectrum disorders change blindness local-global processing vision research Index. décimale : PER Périodiques Résumé : Previous research suggested that adolescents with autism spectrum disorder are better than typically developing children in detecting local, non-social details within complex visual scenes. To better understand these differences, we used the image database by Sareen et al., containing the size and on-screen location information of all changes in the images, in a change blindness paradigm. In this task, an original and a modified real-world scene, separated by a gray blank, alternate repeatedly until observers detect the change. Our results indicated that participants with and without autism spectrum disorder performed similarly when scenes were presented upright, but that only the performance of the typically developing adolescents became worse in the inverted scene condition. In this condition, the correlation between performance and both image difficulty and change predictability was significantly weaker in autism spectrum disorder than in typically developing participants. We suggest that these findings result from a more locally biased search strategy in people with autism spectrum disorder, compared to typically developing participants, in tasks in which the rapid processing of global information does not help to improve change detection performance. Finally, although we found change location, change size, and age to influence participant performance, none of these was directly linked to the observed group-level differences. En ligne : http://dx.doi.org/10.1177/1362361317702559 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=366
in Autism > 22-6 (August 2018) . - p.728-739[article] Change detection of meaningful objects in real-world scenes in adolescents with and without autism spectrum disorder [Texte imprimé et/ou numérique] / S. VANMARCKE, Auteur ; I. NOENS, Auteur ; J. STEYAERT, Auteur ; J. WAGEMANS, Auteur . - p.728-739.
Langues : Anglais (eng)
in Autism > 22-6 (August 2018) . - p.728-739
Mots-clés : autism spectrum disorders change blindness local-global processing vision research Index. décimale : PER Périodiques Résumé : Previous research suggested that adolescents with autism spectrum disorder are better than typically developing children in detecting local, non-social details within complex visual scenes. To better understand these differences, we used the image database by Sareen et al., containing the size and on-screen location information of all changes in the images, in a change blindness paradigm. In this task, an original and a modified real-world scene, separated by a gray blank, alternate repeatedly until observers detect the change. Our results indicated that participants with and without autism spectrum disorder performed similarly when scenes were presented upright, but that only the performance of the typically developing adolescents became worse in the inverted scene condition. In this condition, the correlation between performance and both image difficulty and change predictability was significantly weaker in autism spectrum disorder than in typically developing participants. We suggest that these findings result from a more locally biased search strategy in people with autism spectrum disorder, compared to typically developing participants, in tasks in which the rapid processing of global information does not help to improve change detection performance. Finally, although we found change location, change size, and age to influence participant performance, none of these was directly linked to the observed group-level differences. En ligne : http://dx.doi.org/10.1177/1362361317702559 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=366