Mimetic desire in autism spectrum disorder

International audienceMimetic desire (MD), the spontaneous propensity to pursue goals that others pursue, is a case of social influence that is believed to shape preferences. Autism spectrum disorder (ASD) is defined by both atypical interests and altered social interaction. We investigated whether MD is lower in adults with ASD compared to typically developed adults and whether MD correlates with social anhedonia and social judgment, two aspects of atypical social functioning in autism. Contrary to our hypotheses, MD was similarly present in both ASD and control groups. Anhedonia and social judgment differed between the ASD and control groups but did not correlate with MD. These results extend previous findings by suggesting that basic mechanisms of social influence are preserved in autism. The finding of intact MD in ASD stands against the intuitive idea that atypical interests stem from reduced social influence and indirectly favors the possibility that special interests might be selected for their intrinsic properties

Visual Encoding of Social Cues Contributes to Moral Reasoning in Autism Spectrum Disorder: An Eye-Tracking Study

Eye-tracking studies suggest that visual encoding is important for social processes such as socio-moral reasoning. Alterations to the visual encoding of faces, for example, have been linked to the social phenotype of autism spectrum disorders (ASDs) and are associated with social and communication impairments. Yet, people with ASD often perform similarly to neurotypical participants on measures of moral reasoning, supporting the hypothesis of differential mechanisms of moral reasoning in ASD. The objective of this study was to document visual encoding and moral reasoning in ASD and neurotypical individuals using a visual, ecological, sociomoral reasoning paradigm paired with eye-tracking. Two groups (ASD, Control) matched for age and IQ completed the SoMoral task, a set of picture situations describing everyday moral dilemmas, while their eye movements and pupil dilation were recorded. Moral understanding, decision-making, and justification were recorded. Participants with ASD presented a longer time to first fixation on faces. They also understood fewer dilemmas and produced fewer socially adaptive responses. Despite a similar average level of moral maturity, the justifications produced by participants with ASD were not distributed in the same way as the neurotypical participants. Visual encoding was a significant predictor of moral decision-making and moral justification for both groups. The results are discussed in the context of alternative mechanisms of moral reasoning in ASD

Absence of covert face valuation in Autism

International audienceAutism is a neurodevelopmental condition defined on clinical criteria related to diminished social reciprocity and stereotyped behavior. An influential view explains autism as a social motivation disorder characterized by less attention paid to the social environment and less pleasure experienced with social rewards. However, experimental attempts to validate this theory, by testing the impact of social reward on behavioral choice and brain activity, has yielded mixed results, possibly due to variations in how explicit instructions were about task goals. Here, we specified the putative motivation deficit as an absence of spontaneous valuation in the social domain, unexplained by inattention and correctible by explicit instruction. Since such deficit cannot be assessed with behavioral measures, we used functional neuroimaging (fMRI) to readout covert subjective values, assigned to social and nonsocial stimuli (faces and objects), either explicitly asked to participants (during a likeability judgment task) or not (during age or size estimation tasks). Value-related neural activity observed for objects, or for faces under explicit instructions, was very similar in autistic and control participants, with an activation peak in the ventromedial prefrontal cortex (vmPFC), known as a key node of the brain valuation system. The only difference observed in autistic participants was an absence of the spontaneous valuation normally triggered by faces, even when they were attended for age estimation. Our findings, therefore, suggest that in autism, social stimuli might fail to trigger the automatic activation of the brain valuation system

Les enjeux de littératie dans la communication aux parents du diagnostic de trouble du spectre de l’autisme chez l’enfant

Informer les parents dont l’enfant vient de recevoir un diagnostic de trouble du spectre de l’autisme (TSA) est un enjeu majeur. Il est nécessaire de mieux comprendre comment les parents interprètent et s’approprient cette information dans leur vie quotidienne afin de mieux répondre à leurs besoins.Objectif Mettre en évidence les besoins d’information, le processus de recherche d’information à partir de cadre conceptuel de la littératie en santé (accès, compréhension, interprétation et utilisation) ainsi que les obstacles et les éléments facilitateurs rencontrés.Méthode Une recherche qualitative auprès de groupes de discussion a été menée avec des parents d’enfants ayant reçu un diagnostic de TSA dans les deux dernières années. Deux des trois groupes étaient formés de parents présentant des facteurs de risque associés à un faible niveau de littératie : monoparentalité, faible scolarité, sans-emploi, immigration récente.Résultats Un manque généralisé d’information sur l’autisme et des préoccupations quant à la qualité de l’information trouvée sur Internet sont constatés. Tous les parents ont exprimé leur difficulté à comprendre l’information présentée. Le nombre d’obstacles rencontrés par ces derniers dans la recherche d’information s’est révélé être amplifié par des besoins importants de soutien social.Conclusion Ces résultats soulèvent la nécessité de mieux répondre aux besoins d’information des parents en adaptant les outils proposés en termes d’accès et de compréhension pour la prise de décisions. En plus du soutien informationnel, il demeure crucial d’offrir différentes formes de soutien social, et ce, tout particulièrement aux parents en situation de vulnérabilité. Des propositions pour améliorer la communication sur l’autisme autour du diagnostic sont proposées.Objectives Informing parents whose child has just been diagnosed with Autism Spectrum Disorder (ASD) is a major challenge. The purpose of this research is to identify the informational needs of parents of children recently diagnosed with ASD as well as the barriers and facilitators encountered in their search for information.Methods Qualitative research using the focus group method was conducted with three groups of parents of young children or adolescents diagnosed with ASD within the last two years. Parents were recruited through a hospital clinic. Two groups were parents with one or more risk factors related to low health literacy: single parenthood, low level of schooling, unemployment, recent immigration. A qualitative content analysis was conducted to explore the process of searching for information on autism. Based on the theoretical framework of health literacy, various components were analyzed in terms of access, understanding, interpretation, and use of information for decision-making.Results The results display that there is a general lack of information on autism, as well as concerns about the quality of the information found on the Internet. All parents expressed difficulty understanding the information they found on their own or in the resources, they were offered. They also shared a desire to access sources of information that present autism in a positive way. The use of information for decision-making was limited. In addition, the obstacles encountered while searching for information revealed the importance of social support. Many of the parents reported feeling stigmatized and judged by others because of their child’s behavior.Conclusions The results demonstrate the need to respond to the real informational needs of parents and to adapt the resources used during the diagnosis period, particularly for those with lower literacy levels. In addition, the way of communicating about the diagnosis needs to be reviewed. In order to address these literacy issues, it is important to offer various forms of social support in combination with informational support. In order to reduce psychological distress, it is necessary to provide support when announcing the diagnosis and raise awareness about autism to reduce the stigma experienced by autistic persons and their loved ones

Novel VPS13B Mutations in Three Large Pakistani Cohen Syndrome Families Suggests a Baloch Variant with Autistic-Like Features

Abstract Background Cohen Syndrome (COH1) is a rare autosomal recessive disorder, principally identified by ocular, neural and muscular deficits. We identified three large consanguineous Pakistani families with intellectual disability and in some cases with autistic traits. Methods Clinical assessments were performed in order to allow comparison of clinical features with other VPS13B mutations. Homozygosity mapping followed by whole exome sequencing and Sanger sequencing strategies were used to identify disease-related mutations. Results We identified two novel homozygous deletion mutations in VPS13B, firstly a 1 bp deletion, NM_017890.4:c.6879delT; p.Phe2293Leufs*24, and secondly a deletion of exons 37-40, which co-segregate with affected status. In addition to COH1-related traits, autistic features were reported in a number of family members, contrasting with the “friendly” demeanour often associated with COH1. The c.6879delT mutation is present in two families from different regions of the country, but both from the Baloch sub-ethnic group, and with a shared haplotype, indicating a founder effect among the Baloch population. Conclusion We suspect that the c.6879delT mutation may be a common cause of COH1 and similar phenotypes among the Baloch population. Additionally, most of the individuals with the c.6879delT mutation in these two families also present with autistic like traits, and suggests that this variant may lead to a distinct autistic-like COH1 subgroup

Novel VPS13B Mutations in Three Large Pakistani Cohen Syndrome Families Suggests a Baloch Variant with Autistic-Like Features

BACKGROUND: Cohen Syndrome (COH1) is a rare autosomal recessive disorder, principally identified by ocular, neural and muscular deficits. We identified three large consanguineous Pakistani families with intellectual disability and in some cases with autistic traits. METHODS: Clinical assessments were performed in order to allow comparison of clinical features with other VPS13B mutations. Homozygosity mapping followed by whole exome sequencing and Sanger sequencing strategies were used to identify disease-related mutations. RESULTS: We identified two novel homozygous deletion mutations in VPS13B, firstly a 1 bp deletion, NM_017890.4:c.6879delT; p.Phe2293Leufs*24, and secondly a deletion of exons 37-40, which co-segregate with affected status. In addition to COH1-related traits, autistic features were reported in a number of family members, contrasting with the “friendly” demeanour often associated with COH1. The c.6879delT mutation is present in two families from different regions of the country, but both from the Baloch sub-ethnic group, and with a shared haplotype, indicating a founder effect among the Baloch population. CONCLUSION: We suspect that the c.6879delT mutation may be a common cause of COH1 and similar phenotypes among the Baloch population. Additionally, most of the individuals with the c.6879delT mutation in these two families also present with autistic like traits, and suggests that this variant may lead to a distinct autistic-like COH1 subgroup. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12881-015-0183-0) contains supplementary material, which is available to authorized users