Documents disponibles écrits par cet auteur

Alexithymia and autism diagnostic assessments: Evidence from twins at genetic risk of autism and adults with anorexia nervosa / Hannah HOBSON in Research in Autism Spectrum Disorders, 73 (May 2019) 

Public ISBD [article]  in Research in Autism Spectrum Disorders > 73 (May 2019) . - 101531 Titre : Alexithymia and autism diagnostic assessments: Evidence from twins at genetic risk of autism and adults with anorexia nervosa Type de document : texte imprimé Auteurs : Hannah HOBSON, Auteur ; Heather WESTWOOD, Auteur ; Jane CONWAY, Auteur ; Fiona S. MCEWEN, Auteur ; Emma COLVERT, Auteur ; Caroline CATMUR, Auteur ; Geoffrey BIRD, Auteur ; Francesca HAPPE, Auteur Article en page(s) : 101531 Langues : Anglais (eng) Mots-clés : ADOS  Alexithymia  Diagnosis  Autism  Anorexia nervosa Index. décimale : PER Périodiques Résumé : Background Alexithymia, a difficulty identifying and communicating one’s own emotions, affects socio-emotional processes, such as emotion recognition and empathy. Co-occurring alexithymia is prevalent in Autism Spectrum Disorder (ASD) and underlies some socio-emotional difficulties usually attributed to autism. Socio-emotional abilities are examined during behavioural diagnostic assessments of autism, yet the effect of alexithymia on these assessments is not known. This study aimed to examine the associations between alexithymia and Autism Diagnostic Observation Schedule (ADOS) assessment scores. Method Two previously collected samples of ADOS assessments were used to examine the relationship between alexithymia and ADOS scores. Participants included 96 women with anorexia, and 147 adolescents who were either high in autistic symptoms, or whose twin had high autistic symptoms. We examined 1) the impact of alexithymia on meeting the criteria for autism/ASD, 2) correlations between alexithymia and ADOS subscales, and 3) whether alexithymia predicted scores on specific ADOS items, selected a priori based on existing literature. Results In the adolescent group, parent-reported (but not self-reported) alexithymia correlated with both ADOS sub-scales, predicted scores on ADOS items, and predicted meeting clinical cut-offs for an ASD/autism diagnosis. Few associations were observed in the anorexic sample between self-reported alexithymia and ADOS subscale and item scores, but the presence of alexithymia predicted the likelihood of meeting diagnostic criteria for autism/ASD in this sample. Conclusions Alexithymia does show relationships with ADOS assessment scores. We discuss potential clinical and research implications, particularly in studies of autism where the ADOS is often the only diagnostic measure used. En ligne : https://doi.org/10.1016/j.rasd.2020.101531 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4219 [article] Alexithymia and autism diagnostic assessments: Evidence from twins at genetic risk of autism and adults with anorexia nervosa [texte imprimé] / Hannah HOBSON, Auteur ; Heather WESTWOOD, Auteur ; Jane CONWAY, Auteur ; Fiona S. MCEWEN, Auteur ; Emma COLVERT, Auteur ; Caroline CATMUR, Auteur ; Geoffrey BIRD, Auteur ; Francesca HAPPE, Auteur . - 101531. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 73 (May 2019) . - 101531 Mots-clés : ADOS  Alexithymia  Diagnosis  Autism  Anorexia nervosa Index. décimale : PER Périodiques Résumé : Background Alexithymia, a difficulty identifying and communicating one’s own emotions, affects socio-emotional processes, such as emotion recognition and empathy. Co-occurring alexithymia is prevalent in Autism Spectrum Disorder (ASD) and underlies some socio-emotional difficulties usually attributed to autism. Socio-emotional abilities are examined during behavioural diagnostic assessments of autism, yet the effect of alexithymia on these assessments is not known. This study aimed to examine the associations between alexithymia and Autism Diagnostic Observation Schedule (ADOS) assessment scores. Method Two previously collected samples of ADOS assessments were used to examine the relationship between alexithymia and ADOS scores. Participants included 96 women with anorexia, and 147 adolescents who were either high in autistic symptoms, or whose twin had high autistic symptoms. We examined 1) the impact of alexithymia on meeting the criteria for autism/ASD, 2) correlations between alexithymia and ADOS subscales, and 3) whether alexithymia predicted scores on specific ADOS items, selected a priori based on existing literature. Results In the adolescent group, parent-reported (but not self-reported) alexithymia correlated with both ADOS sub-scales, predicted scores on ADOS items, and predicted meeting clinical cut-offs for an ASD/autism diagnosis. Few associations were observed in the anorexic sample between self-reported alexithymia and ADOS subscale and item scores, but the presence of alexithymia predicted the likelihood of meeting diagnostic criteria for autism/ASD in this sample. Conclusions Alexithymia does show relationships with ADOS assessment scores. We discuss potential clinical and research implications, particularly in studies of autism where the ADOS is often the only diagnostic measure used. En ligne : https://doi.org/10.1016/j.rasd.2020.101531 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4219

Autism and transgender identity: Implications for depression and anxiety / Jennifer MURPHY in Research in Autism Spectrum Disorders, 69 (January 2020) 

Public ISBD [article]  in Research in Autism Spectrum Disorders > 69 (January 2020) . - p.101466 Titre : Autism and transgender identity: Implications for depression and anxiety Type de document : texte imprimé Auteurs : Jennifer MURPHY, Auteur ; Freya PRENTICE, Auteur ; Reubs WALSH, Auteur ; Caroline CATMUR, Auteur ; Geoffrey BIRD, Auteur Article en page(s) : p.101466 Langues : Anglais (eng) Mots-clés : Gender identity  Autism  Transgender  Gender variance  Depression  Anxiety Index. décimale : PER Périodiques Résumé : Autistic traits are over-represented in transgender populations, and gender variance is high in autistic individuals. Furthermore, some evidence suggests that the autism/transgender overlap is limited to individuals sex assigned female. Few studies, however, have investigated the impact of this overlap on mental health. This study therefore sought to investigate whether the autism/transgender overlap confers an increased risk of depression or anxiety. An online study of 727 individuals revealed a substantial overlap between transgender identity and autism, with increased autistic traits found in trans men compared to trans women. Depression and anxiety were highest in autistic-trans individuals, but no superadditive effect was observed. The implications of these findings are discussed in relation to the wider healthcare system. En ligne : https://doi.org/10.1016/j.rasd.2019.101466 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4128 [article] Autism and transgender identity: Implications for depression and anxiety [texte imprimé] / Jennifer MURPHY, Auteur ; Freya PRENTICE, Auteur ; Reubs WALSH, Auteur ; Caroline CATMUR, Auteur ; Geoffrey BIRD, Auteur . - p.101466. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 69 (January 2020) . - p.101466 Mots-clés : Gender identity  Autism  Transgender  Gender variance  Depression  Anxiety Index. décimale : PER Périodiques Résumé : Autistic traits are over-represented in transgender populations, and gender variance is high in autistic individuals. Furthermore, some evidence suggests that the autism/transgender overlap is limited to individuals sex assigned female. Few studies, however, have investigated the impact of this overlap on mental health. This study therefore sought to investigate whether the autism/transgender overlap confers an increased risk of depression or anxiety. An online study of 727 individuals revealed a substantial overlap between transgender identity and autism, with increased autistic traits found in trans men compared to trans women. Depression and anxiety were highest in autistic-trans individuals, but no superadditive effect was observed. The implications of these findings are discussed in relation to the wider healthcare system. En ligne : https://doi.org/10.1016/j.rasd.2019.101466 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4128

Can Neurotypical Individuals Read Autistic Facial Expressions? Atypical Production of Emotional Facial Expressions in Autism Spectrum Disorders / Rebecca BREWER in Autism Research, 9-2 (February 2016) 

Public ISBD [article]  in Autism Research > 9-2 (February 2016) . - p.262-271 Titre : Can Neurotypical Individuals Read Autistic Facial Expressions? Atypical Production of Emotional Facial Expressions in Autism Spectrum Disorders Type de document : texte imprimé Auteurs : Rebecca BREWER, Auteur ; Federica BIOTTI, Auteur ; Caroline CATMUR, Auteur ; Clare PRESS, Auteur ; Francesca HAPPE, Auteur ; Richard COOK, Auteur ; Geoffrey BIRD, Auteur Article en page(s) : p.262-271 Langues : Anglais (eng) Mots-clés : social cognition  face perception  cognitive neuroscience  expression production Index. décimale : PER Périodiques Résumé : The difficulties encountered by individuals with autism spectrum disorder (ASD) when interacting with neurotypical (NT, i.e. nonautistic) individuals are usually attributed to failure to recognize the emotions and mental states of their NT interaction partner. It is also possible, however, that at least some of the difficulty is due to a failure of NT individuals to read the mental and emotional states of ASD interaction partners. Previous research has frequently observed deficits of typical facial emotion recognition in individuals with ASD, suggesting atypical representations of emotional expressions. Relatively little research, however, has investigated the ability of individuals with ASD to produce recognizable emotional expressions, and thus, whether NT individuals can recognize autistic emotional expressions. The few studies which have investigated this have used only NT observers, making it impossible to determine whether atypical representations are shared among individuals with ASD, or idiosyncratic. This study investigated NT and ASD participants’ ability to recognize emotional expressions produced by NT and ASD posers. Three posing conditions were included, to determine whether potential group differences are due to atypical cognitive representations of emotion, impaired understanding of the communicative value of expressions, or poor proprioceptive feedback. Results indicated that ASD expressions were recognized less well than NT expressions, and that this is likely due to a genuine deficit in the representation of typical emotional expressions in this population. Further, ASD expressions were equally poorly recognized by NT individuals and those with ASD, implicating idiosyncratic, rather than common, atypical representations of emotional expressions in ASD. En ligne : http://dx.doi.org/10.1002/aur.1508 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2827 [article] Can Neurotypical Individuals Read Autistic Facial Expressions? Atypical Production of Emotional Facial Expressions in Autism Spectrum Disorders [texte imprimé] / Rebecca BREWER, Auteur ; Federica BIOTTI, Auteur ; Caroline CATMUR, Auteur ; Clare PRESS, Auteur ; Francesca HAPPE, Auteur ; Richard COOK, Auteur ; Geoffrey BIRD, Auteur . - p.262-271. Langues : Anglais (eng) in Autism Research > 9-2 (February 2016) . - p.262-271 Mots-clés : social cognition  face perception  cognitive neuroscience  expression production Index. décimale : PER Périodiques Résumé : The difficulties encountered by individuals with autism spectrum disorder (ASD) when interacting with neurotypical (NT, i.e. nonautistic) individuals are usually attributed to failure to recognize the emotions and mental states of their NT interaction partner. It is also possible, however, that at least some of the difficulty is due to a failure of NT individuals to read the mental and emotional states of ASD interaction partners. Previous research has frequently observed deficits of typical facial emotion recognition in individuals with ASD, suggesting atypical representations of emotional expressions. Relatively little research, however, has investigated the ability of individuals with ASD to produce recognizable emotional expressions, and thus, whether NT individuals can recognize autistic emotional expressions. The few studies which have investigated this have used only NT observers, making it impossible to determine whether atypical representations are shared among individuals with ASD, or idiosyncratic. This study investigated NT and ASD participants’ ability to recognize emotional expressions produced by NT and ASD posers. Three posing conditions were included, to determine whether potential group differences are due to atypical cognitive representations of emotion, impaired understanding of the communicative value of expressions, or poor proprioceptive feedback. Results indicated that ASD expressions were recognized less well than NT expressions, and that this is likely due to a genuine deficit in the representation of typical emotional expressions in this population. Further, ASD expressions were equally poorly recognized by NT individuals and those with ASD, implicating idiosyncratic, rather than common, atypical representations of emotional expressions in ASD. En ligne : http://dx.doi.org/10.1002/aur.1508 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2827

Intact Automatic Imitation and Typical Spatial Compatibility in Autism Spectrum Disorder: Challenging the Broken Mirror Theory / Sophie SOWDEN in Autism Research, 9-2 (February 2016) 

Public ISBD [article]  in Autism Research > 9-2 (February 2016) . - p.292-300 Titre : Intact Automatic Imitation and Typical Spatial Compatibility in Autism Spectrum Disorder: Challenging the Broken Mirror Theory Type de document : texte imprimé Auteurs : Sophie SOWDEN, Auteur ; Svenja KOEHNE, Auteur ; Caroline CATMUR, Auteur ; Isabel DZIOBEK, Auteur ; Geoffrey BIRD, Auteur Article en page(s) : p.292-300 Langues : Anglais (eng) Mots-clés : autism  imitation  mirror neurons  broken mirror theory  individual differences Index. décimale : PER Périodiques Résumé : A lack of imitative behavior is frequently described as a core feature of Autism Spectrum Disorder (ASD), and is consistent with claims of mirror neuron system dysfunction in these individuals. Previous research has questioned this characterization of ASD however, arguing that when tests of automatic imitation are used—which do not require higher-level cognitive processing—imitative behavior is intact or even enhanced in individuals with ASD. In Experiment 1, 60 adult individuals with ASD and a matched Control group completed an automatic imitation task in which they were required to perform an index or a middle finger lift while observing a hand making either the same, or the alternate, finger movement. Both groups demonstrated a significant imitation effect whereby actions were executed faster when preceded by observation of the same action, than when preceded by the alternate action. The magnitude of this “imitation effect” was statistically indistinguishable in the ASD and Control groups. Experiment 2 utilized an improved automatic imitation paradigm to demonstrate that, when automatic imitation effects are isolated from those due to spatial compatibility, increasing autism symptom severity is associated with an increased tendency to imitate. Notably, there was no association between autism symptom severity and spatial compatibility, demonstrating the specificity of the link between ASD symptoms and increased imitation. These results provide evidence against claims of a lack of imitative behavior in ASD, and challenge the “Broken Mirror Theory of Autism.” En ligne : http://dx.doi.org/10.1002/aur.1511 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2827 [article] Intact Automatic Imitation and Typical Spatial Compatibility in Autism Spectrum Disorder: Challenging the Broken Mirror Theory [texte imprimé] / Sophie SOWDEN, Auteur ; Svenja KOEHNE, Auteur ; Caroline CATMUR, Auteur ; Isabel DZIOBEK, Auteur ; Geoffrey BIRD, Auteur . - p.292-300. Langues : Anglais (eng) in Autism Research > 9-2 (February 2016) . - p.292-300 Mots-clés : autism  imitation  mirror neurons  broken mirror theory  individual differences Index. décimale : PER Périodiques Résumé : A lack of imitative behavior is frequently described as a core feature of Autism Spectrum Disorder (ASD), and is consistent with claims of mirror neuron system dysfunction in these individuals. Previous research has questioned this characterization of ASD however, arguing that when tests of automatic imitation are used—which do not require higher-level cognitive processing—imitative behavior is intact or even enhanced in individuals with ASD. In Experiment 1, 60 adult individuals with ASD and a matched Control group completed an automatic imitation task in which they were required to perform an index or a middle finger lift while observing a hand making either the same, or the alternate, finger movement. Both groups demonstrated a significant imitation effect whereby actions were executed faster when preceded by observation of the same action, than when preceded by the alternate action. The magnitude of this “imitation effect” was statistically indistinguishable in the ASD and Control groups. Experiment 2 utilized an improved automatic imitation paradigm to demonstrate that, when automatic imitation effects are isolated from those due to spatial compatibility, increasing autism symptom severity is associated with an increased tendency to imitate. Notably, there was no association between autism symptom severity and spatial compatibility, demonstrating the specificity of the link between ASD symptoms and increased imitation. These results provide evidence against claims of a lack of imitative behavior in ASD, and challenge the “Broken Mirror Theory of Autism.” En ligne : http://dx.doi.org/10.1002/aur.1511 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=2827