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Auteur Philippe A. CHOUINARD
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Documents disponibles écrits par cet auteur (5)
Faire une suggestion Affiner la rechercheAlterations in Rapid Social Evaluations in Individuals with High Autism Traits / C. BECKER in Journal of Autism and Developmental Disorders, 51-10 (October 2021)
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Titre : Alterations in Rapid Social Evaluations in Individuals with High Autism Traits Type de document : texte imprimé Auteurs : C. BECKER, Auteur ; E. CATERER, Auteur ; Philippe A. CHOUINARD, Auteur ; R. LAYCOCK, Auteur Article en page(s) : p.3575-3585 Langues : Anglais (eng) Mots-clés : Adult Autism Spectrum Disorder/diagnosis Autistic Disorder/diagnosis Emotions Facial Expression Happiness Humans Autism spectrum Emotion recognition Rapid visual processing Social evaluation Index. décimale : PER Périodiques Résumé : Typically developing adults with low and high Autism Spectrum Quotient (AQ) scores made rapid social evaluations of neutral faces when these were primed by briefly presented emotional faces. High AQ participants rated neutral faces as more threatening than low AQ participants, regardless of the prime condition. Both groups rated target neutral faces as more threatening with fearful compared with neutral primes, while neither group demonstrated an effect of happy primes on the ratings of neutral target faces. These results demonstrate subtle anomalies in rapid visual processing of emotional faces across the broader autism spectrum. They suggest that higher autism traits may be associated with a generalized threat bias in rapid social evaluations. En ligne : http://dx.doi.org/10.1007/s10803-020-04795-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=453
in Journal of Autism and Developmental Disorders > 51-10 (October 2021) . - p.3575-3585[article] Alterations in Rapid Social Evaluations in Individuals with High Autism Traits [texte imprimé] / C. BECKER, Auteur ; E. CATERER, Auteur ; Philippe A. CHOUINARD, Auteur ; R. LAYCOCK, Auteur . - p.3575-3585.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 51-10 (October 2021) . - p.3575-3585
Mots-clés : Adult Autism Spectrum Disorder/diagnosis Autistic Disorder/diagnosis Emotions Facial Expression Happiness Humans Autism spectrum Emotion recognition Rapid visual processing Social evaluation Index. décimale : PER Périodiques Résumé : Typically developing adults with low and high Autism Spectrum Quotient (AQ) scores made rapid social evaluations of neutral faces when these were primed by briefly presented emotional faces. High AQ participants rated neutral faces as more threatening than low AQ participants, regardless of the prime condition. Both groups rated target neutral faces as more threatening with fearful compared with neutral primes, while neither group demonstrated an effect of happy primes on the ratings of neutral target faces. These results demonstrate subtle anomalies in rapid visual processing of emotional faces across the broader autism spectrum. They suggest that higher autism traits may be associated with a generalized threat bias in rapid social evaluations. En ligne : http://dx.doi.org/10.1007/s10803-020-04795-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=453 Autism Traits, Sensory Over-Responsivity, Anxiety, and Stress: A Test of Explanatory Models / G. A. AMOS in Journal of Autism and Developmental Disorders, 49-1 (January 2019)
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Titre : Autism Traits, Sensory Over-Responsivity, Anxiety, and Stress: A Test of Explanatory Models Type de document : texte imprimé Auteurs : G. A. AMOS, Auteur ; G. BYRNE, Auteur ; Philippe A. CHOUINARD, Auteur ; T. GODBER, Auteur Article en page(s) : p.98-112 Langues : Anglais (eng) Mots-clés : Anxiety Bapq Broad Autism Phenotype Questionnaire Dass-21 Sensory over-responsivity Stress Structural equation modelling Index. décimale : PER Périodiques Résumé : The relationship between autistic traits, stress, and anxiety experienced by the general population was investigated using an adult sample that evaluated the suitability of three theoretical models proposed by Green and Ben-Sasson. Participants completed online questionnaires that were analysed using structural equation modelling and partial correlation analyses. Of the models tested, the model that proposed SOR and stress as mediators of the relationship between autistic traits and anxiety was able to explain the variance in the data better than the other models. Based on these findings, we suggest that sensory neutral environments should be considered for the prevention and management of anxiety and stress symptoms for people in the general population with higher levels of autistic traits. En ligne : http://dx.doi.org/10.1007/s10803-018-3695-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=376
in Journal of Autism and Developmental Disorders > 49-1 (January 2019) . - p.98-112[article] Autism Traits, Sensory Over-Responsivity, Anxiety, and Stress: A Test of Explanatory Models [texte imprimé] / G. A. AMOS, Auteur ; G. BYRNE, Auteur ; Philippe A. CHOUINARD, Auteur ; T. GODBER, Auteur . - p.98-112.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 49-1 (January 2019) . - p.98-112
Mots-clés : Anxiety Bapq Broad Autism Phenotype Questionnaire Dass-21 Sensory over-responsivity Stress Structural equation modelling Index. décimale : PER Périodiques Résumé : The relationship between autistic traits, stress, and anxiety experienced by the general population was investigated using an adult sample that evaluated the suitability of three theoretical models proposed by Green and Ben-Sasson. Participants completed online questionnaires that were analysed using structural equation modelling and partial correlation analyses. Of the models tested, the model that proposed SOR and stress as mediators of the relationship between autistic traits and anxiety was able to explain the variance in the data better than the other models. Based on these findings, we suggest that sensory neutral environments should be considered for the prevention and management of anxiety and stress symptoms for people in the general population with higher levels of autistic traits. En ligne : http://dx.doi.org/10.1007/s10803-018-3695-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=376 Grey-Matter Thickness of the Left But Not the Right Primary Visual Area Correlates with Autism Traits in Typically Developing Adults / Gizem Y. YILDIZ in Journal of Autism and Developmental Disorders, 51-2 (February 2021)
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Titre : Grey-Matter Thickness of the Left But Not the Right Primary Visual Area Correlates with Autism Traits in Typically Developing Adults Type de document : texte imprimé Auteurs : Gizem Y. YILDIZ, Auteur ; Julian S. VILSTEN, Auteur ; Amy Siobhan MILLARD, Auteur ; Philippe A. CHOUINARD, Auteur Article en page(s) : p.405-417 Langues : Anglais (eng) Mots-clés : Autism-spectrum quotient (AQ) Grey-matter thickness Magnetic resonance imaging (MRI) Primary visual area (V1) Retinotopy Index. décimale : PER Périodiques Résumé : We examined whether functional and structural variability in the primary visual area (V1) correlated with autism traits. Twenty-nine participants (16 males; M(Age) = 26.4 years, SD(Age) = 4.0 years) completed the autism-spectrum quotient (AQ) questionnaire prior to a magnetic resonance imaging session. The total AQ scores was used to assess the degree of self-reported autism traits. The average functional activation in V1 to visual stimulation and its average grey-matter thickness were calculated. There were no correlations between functional activation in V1 and autism traits. Conversely, grey-matter thickness of the left but not the right V1 correlated with autism traits. We conclude that structural changes in the left V1 could be a marker for the presence of autism traits. En ligne : http://dx.doi.org/10.1007/s10803-020-04553-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=440
in Journal of Autism and Developmental Disorders > 51-2 (February 2021) . - p.405-417[article] Grey-Matter Thickness of the Left But Not the Right Primary Visual Area Correlates with Autism Traits in Typically Developing Adults [texte imprimé] / Gizem Y. YILDIZ, Auteur ; Julian S. VILSTEN, Auteur ; Amy Siobhan MILLARD, Auteur ; Philippe A. CHOUINARD, Auteur . - p.405-417.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 51-2 (February 2021) . - p.405-417
Mots-clés : Autism-spectrum quotient (AQ) Grey-matter thickness Magnetic resonance imaging (MRI) Primary visual area (V1) Retinotopy Index. décimale : PER Périodiques Résumé : We examined whether functional and structural variability in the primary visual area (V1) correlated with autism traits. Twenty-nine participants (16 males; M(Age) = 26.4 years, SD(Age) = 4.0 years) completed the autism-spectrum quotient (AQ) questionnaire prior to a magnetic resonance imaging session. The total AQ scores was used to assess the degree of self-reported autism traits. The average functional activation in V1 to visual stimulation and its average grey-matter thickness were calculated. There were no correlations between functional activation in V1 and autism traits. Conversely, grey-matter thickness of the left but not the right V1 correlated with autism traits. We conclude that structural changes in the left V1 could be a marker for the presence of autism traits. En ligne : http://dx.doi.org/10.1007/s10803-020-04553-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=440 Size Constancy is Preserved but Afterimages are Prolonged in Typical Individuals with Higher Degrees of Self-Reported Autistic Traits / Irene SPERANDIO in Journal of Autism and Developmental Disorders, 47-2 (February 2017)
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Titre : Size Constancy is Preserved but Afterimages are Prolonged in Typical Individuals with Higher Degrees of Self-Reported Autistic Traits Type de document : texte imprimé Auteurs : Irene SPERANDIO, Auteur ; Katy L. UNWIN, Auteur ; Oriane LANDRY, Auteur ; Philippe A. CHOUINARD, Auteur Article en page(s) : p.447-459 Langues : Anglais (eng) Mots-clés : Adaptation Afterimage Autism spectrum quotient Light sensitivity Index. décimale : PER Périodiques Résumé : Deficits in perceptual constancies from early infancy have been proposed to contribute to autism and exacerbate its symptoms (Hellendoorn et al., Frontiers in Psychology 6:1–16, 2015). Here, we examined size constancy in adults from the general population (N = 106) with different levels of self-reported autistic traits using an approach based on negative afterimages. The afterimage strength, as indexed by duration and vividness, was also quantified. In opposition to the Hellendoorn and colleagues’ model, we were unable to demonstrate any kind of relationship between abilities in size constancy and autistic traits. However, our results demonstrated that individuals with higher degrees of autistic traits experienced more persistent afterimages. We discuss possible retinal and post-retinal explanations for prolonged afterimages in people with higher levels of autistic traits. En ligne : http://dx.doi.org/10.1007/s10803-016-2971-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303
in Journal of Autism and Developmental Disorders > 47-2 (February 2017) . - p.447-459[article] Size Constancy is Preserved but Afterimages are Prolonged in Typical Individuals with Higher Degrees of Self-Reported Autistic Traits [texte imprimé] / Irene SPERANDIO, Auteur ; Katy L. UNWIN, Auteur ; Oriane LANDRY, Auteur ; Philippe A. CHOUINARD, Auteur . - p.447-459.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 47-2 (February 2017) . - p.447-459
Mots-clés : Adaptation Afterimage Autism spectrum quotient Light sensitivity Index. décimale : PER Périodiques Résumé : Deficits in perceptual constancies from early infancy have been proposed to contribute to autism and exacerbate its symptoms (Hellendoorn et al., Frontiers in Psychology 6:1–16, 2015). Here, we examined size constancy in adults from the general population (N = 106) with different levels of self-reported autistic traits using an approach based on negative afterimages. The afterimage strength, as indexed by duration and vividness, was also quantified. In opposition to the Hellendoorn and colleagues’ model, we were unable to demonstrate any kind of relationship between abilities in size constancy and autistic traits. However, our results demonstrated that individuals with higher degrees of autistic traits experienced more persistent afterimages. We discuss possible retinal and post-retinal explanations for prolonged afterimages in people with higher levels of autistic traits. En ligne : http://dx.doi.org/10.1007/s10803-016-2971-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303 Susceptibility to Optical Illusions Varies as a Function of the Autism-Spectrum Quotient but not in Ways Predicted by Local–Global Biases / Philippe A. CHOUINARD in Journal of Autism and Developmental Disorders, 46-6 (June 2016)
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Titre : Susceptibility to Optical Illusions Varies as a Function of the Autism-Spectrum Quotient but not in Ways Predicted by Local–Global Biases Type de document : texte imprimé Auteurs : Philippe A. CHOUINARD, Auteur ; Katy L. UNWIN, Auteur ; Oriane LANDRY, Auteur ; Irene SPERANDIO, Auteur Article en page(s) : p.2224-2239 Langues : Anglais (eng) Mots-clés : Visual illusions Shepard’s tabletops illusion Visual perception Illusory susceptibility Autism-spectrum quotient (AQ) Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorder and those with autistic tendencies in non-clinical groups are thought to have a perceptual style privileging local details over global integration. We used 13 illusions to investigate this perceptual style in typically developing adults with various levels of autistic traits. Illusory susceptibility was entered into a principal-component analysis. Only one factor, consisting of the Shepard’s tabletops and Square-diamond illusions, was found to have reduced susceptibility as a function of autistic traits. Given that only two illusions were affected and that these illusions depend mostly on the processing of within-object relational properties, we conclude there is something distinct about autistic-like perceptual functioning but not in ways predicted by a preference of local over global elements. En ligne : http://dx.doi.org/10.1007/s10803-016-2753-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289
in Journal of Autism and Developmental Disorders > 46-6 (June 2016) . - p.2224-2239[article] Susceptibility to Optical Illusions Varies as a Function of the Autism-Spectrum Quotient but not in Ways Predicted by Local–Global Biases [texte imprimé] / Philippe A. CHOUINARD, Auteur ; Katy L. UNWIN, Auteur ; Oriane LANDRY, Auteur ; Irene SPERANDIO, Auteur . - p.2224-2239.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-6 (June 2016) . - p.2224-2239
Mots-clés : Visual illusions Shepard’s tabletops illusion Visual perception Illusory susceptibility Autism-spectrum quotient (AQ) Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorder and those with autistic tendencies in non-clinical groups are thought to have a perceptual style privileging local details over global integration. We used 13 illusions to investigate this perceptual style in typically developing adults with various levels of autistic traits. Illusory susceptibility was entered into a principal-component analysis. Only one factor, consisting of the Shepard’s tabletops and Square-diamond illusions, was found to have reduced susceptibility as a function of autistic traits. Given that only two illusions were affected and that these illusions depend mostly on the processing of within-object relational properties, we conclude there is something distinct about autistic-like perceptual functioning but not in ways predicted by a preference of local over global elements. En ligne : http://dx.doi.org/10.1007/s10803-016-2753-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289

