Perceptual grouping abilities in individuals with autism spectrum disorder; exploring patterns of ability in relation to grouping type and levels of development / Emily K. FARRAN in Autism Research, 4-4 (August 2011)  

Public ISBD [article]  inAutism Research > 4-4 (August 2011) . - p.283-292 Titre : Perceptual grouping abilities in individuals with autism spectrum disorder; exploring patterns of ability in relation to grouping type and levels of development Type de document : Texte imprimé et/ou numérique Auteurs : Emily K. FARRAN, Auteur ; Mark BROSNAN, Auteur Année de publication : 2011 Article en page(s) : p.283-292 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : 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. En ligne : http://dx.doi.org/10.1002/aur.202 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=141 [article] Perceptual grouping abilities in individuals with autism spectrum disorder; exploring patterns of ability in relation to grouping type and levels of development [Texte imprimé et/ou numérique] / Emily K. FARRAN, Auteur ; Mark BROSNAN, Auteur . - 2011 . - p.283-292. Langues : Anglais (eng) in Autism Research > 4-4 (August 2011) . - p.283-292 Index. décimale : PER Périodiques Résumé : 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. En ligne : http://dx.doi.org/10.1002/aur.202 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=141

Visual search for basic emotional expressions in autism; impaired processing of anger, fear and sadness, but a typical happy face advantage / Emily K. FARRAN in Research in Autism Spectrum Disorders, 5-1 (January-March 2011)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 5-1 (January-March 2011) . - p.455-462 Titre : Visual search for basic emotional expressions in autism; impaired processing of anger, fear and sadness, but a typical happy face advantage Type de document : Texte imprimé et/ou numérique Auteurs : Emily K. FARRAN, Auteur ; Amanda BRANSON, Auteur ; Ben J. KING, Auteur Année de publication : 2011 Article en page(s) : p.455-462 Langues : Anglais (eng) Mots-clés : Autism Emotion Visual-search Face-processing Index. décimale : PER Périodiques Résumé : Facial expression recognition was investigated in 20 males with high functioning autism (HFA) or Asperger syndrome (AS), compared to typically developing individuals matched for chronological age (TD CA group) and verbal and non-verbal ability (TD V/NV group). This was the first study to employ a visual search, “face in the crowd” paradigm with a HFA/AS group, which explored responses to numerous facial expressions using real-face stimuli. Results showed slower response times for processing fear, anger and sad expressions in the HFA/AS group, relative to the TD CA group, but not the TD V/NV group. Reponses to happy, disgust and surprise expressions showed no group differences. Results are discussed with reference to the amygdala theory of autism. En ligne : http://dx.doi.org/10.1016/j.rasd.2010.06.009 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=111 [article] Visual search for basic emotional expressions in autism; impaired processing of anger, fear and sadness, but a typical happy face advantage [Texte imprimé et/ou numérique] / Emily K. FARRAN, Auteur ; Amanda BRANSON, Auteur ; Ben J. KING, Auteur . - 2011 . - p.455-462. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 5-1 (January-March 2011) . - p.455-462 Mots-clés : Autism Emotion Visual-search Face-processing Index. décimale : PER Périodiques Résumé : Facial expression recognition was investigated in 20 males with high functioning autism (HFA) or Asperger syndrome (AS), compared to typically developing individuals matched for chronological age (TD CA group) and verbal and non-verbal ability (TD V/NV group). This was the first study to employ a visual search, “face in the crowd” paradigm with a HFA/AS group, which explored responses to numerous facial expressions using real-face stimuli. Results showed slower response times for processing fear, anger and sad expressions in the HFA/AS group, relative to the TD CA group, but not the TD V/NV group. Reponses to happy, disgust and surprise expressions showed no group differences. Results are discussed with reference to the amygdala theory of autism. En ligne : http://dx.doi.org/10.1016/j.rasd.2010.06.009 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=111

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