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Auteur D. W. EVANS |
Documents disponibles écrits par cet auteur (5)



Asymmetry of fusiform structure in autism spectrum disorder: trajectory and association with symptom severity / C. C. DOUGHERTY in Molecular Autism, 7 (2016)
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Titre : Asymmetry of fusiform structure in autism spectrum disorder: trajectory and association with symptom severity Type de document : Texte imprimé et/ou numérique Auteurs : C. C. DOUGHERTY, Auteur ; D. W. EVANS, Auteur ; G. J. KATUWAL, Auteur ; A. M. MICHAEL, Auteur Article en page(s) : 28p. Langues : Anglais (eng) Mots-clés : Adolescent Adult Algorithms Autism Spectrum Disorder/diagnostic imaging/pathology Child Cross-Sectional Studies Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging Male Severity of Illness Index Temporal Lobe/anatomy & histology Young Adult Asymmetry Autism spectrum disorder Development Fusiform gyrus Structural imaging Index. décimale : PER Périodiques Résumé : BACKGROUND: While asymmetry in the fusiform gyrus (FFG) has been reported in functional and structural studies in typically developing controls (TDC), few studies have examined FFG asymmetry in autism spectrum disorder (ASD) subjects and those studies are limited by small sample sizes, and confounded by cognitive ability or handedness. No previous work has examined FFG surface area or cortical thickness asymmetry in ASD; nor do we understand the trajectory of FFG asymmetry over time. Finally, it is not known how FFG structural asymmetry relates to ASD symptom severity. METHODS: In this study, we examined FFG volume, surface area, and cortical thickness asymmetry, as well as their cross-sectional trajectories in a large sample of right-handed males aged 7 to 25 years with 128 ASD and 127 TDC subjects using general linear models. In addition, we examined the relationship between FFG asymmetry and ASD severity using the Autism Diagnostic Observation Schedule (ADOS) and Gotham autism severity scores. RESULTS: Findings revealed that while group differences were evident with mean leftward asymmetry in ASD and mean near symmetry in TDC volume and surface area, asymmetry for both groups existed on a spectrum encompassing leftward and rightward asymmetry. In ASD subjects, volume asymmetry was negatively associated with ADOS and autism severity score symptom measures, with a subset of rightward asymmetric patients being most severely affected. We also observed differential trajectory of surface area asymmetry: ASD subjects exhibited a change from leftward asymmetry toward symmetry from age 7 to 25, whereas TDCs exhibited the reverse trend with a change from near symmetry toward leftward symmetry over the observed age range. CONCLUSIONS: Abnormalities in FFG structural asymmetry are related to symptom severity in ASD and show differential developmental trajectory compared to TDC. This study is the first to note these findings. These results may have important implications for understanding the role of FFG asymmetry in ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0089-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328
in Molecular Autism > 7 (2016) . - 28p.[article] Asymmetry of fusiform structure in autism spectrum disorder: trajectory and association with symptom severity [Texte imprimé et/ou numérique] / C. C. DOUGHERTY, Auteur ; D. W. EVANS, Auteur ; G. J. KATUWAL, Auteur ; A. M. MICHAEL, Auteur . - 28p.
Langues : Anglais (eng)
in Molecular Autism > 7 (2016) . - 28p.
Mots-clés : Adolescent Adult Algorithms Autism Spectrum Disorder/diagnostic imaging/pathology Child Cross-Sectional Studies Humans Image Processing, Computer-Assisted Magnetic Resonance Imaging Male Severity of Illness Index Temporal Lobe/anatomy & histology Young Adult Asymmetry Autism spectrum disorder Development Fusiform gyrus Structural imaging Index. décimale : PER Périodiques Résumé : BACKGROUND: While asymmetry in the fusiform gyrus (FFG) has been reported in functional and structural studies in typically developing controls (TDC), few studies have examined FFG asymmetry in autism spectrum disorder (ASD) subjects and those studies are limited by small sample sizes, and confounded by cognitive ability or handedness. No previous work has examined FFG surface area or cortical thickness asymmetry in ASD; nor do we understand the trajectory of FFG asymmetry over time. Finally, it is not known how FFG structural asymmetry relates to ASD symptom severity. METHODS: In this study, we examined FFG volume, surface area, and cortical thickness asymmetry, as well as their cross-sectional trajectories in a large sample of right-handed males aged 7 to 25 years with 128 ASD and 127 TDC subjects using general linear models. In addition, we examined the relationship between FFG asymmetry and ASD severity using the Autism Diagnostic Observation Schedule (ADOS) and Gotham autism severity scores. RESULTS: Findings revealed that while group differences were evident with mean leftward asymmetry in ASD and mean near symmetry in TDC volume and surface area, asymmetry for both groups existed on a spectrum encompassing leftward and rightward asymmetry. In ASD subjects, volume asymmetry was negatively associated with ADOS and autism severity score symptom measures, with a subset of rightward asymmetric patients being most severely affected. We also observed differential trajectory of surface area asymmetry: ASD subjects exhibited a change from leftward asymmetry toward symmetry from age 7 to 25, whereas TDCs exhibited the reverse trend with a change from near symmetry toward leftward symmetry over the observed age range. CONCLUSIONS: Abnormalities in FFG structural asymmetry are related to symptom severity in ASD and show differential developmental trajectory compared to TDC. This study is the first to note these findings. These results may have important implications for understanding the role of FFG asymmetry in ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0089-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328 Brief report: Poor self-regulation as a predictor of individual differences in adaptive functioning in young children with autism spectrum disorder / M. ULJAREVIC in Autism Research, 11-8 (August 2018)
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Titre : Brief report: Poor self-regulation as a predictor of individual differences in adaptive functioning in young children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : M. ULJAREVIC, Auteur ; D. HEDLEY, Auteur ; R. NEVILL, Auteur ; D. W. EVANS, Auteur ; Ru Ying CAI, Auteur ; Eric BUTTER, Auteur ; J. A. MULICK, Auteur Article en page(s) : p.1157-1165 Langues : Anglais (eng) Mots-clés : adaptive behavior autism spectrum disorder dysregulated profile individual variability/heterogeneity self-regulation Index. décimale : PER Périodiques Résumé : The present study examined the link between poor self-regulation (measured by the child behavior checklist dysregulated profile [DP]) and core autism symptoms, as well as with developmental level, in a sample of 107 children with autism spectrum disorder (ASD) aged 19-46 months. We further examined the utility of DP in predicting individual differences in adaptive functioning, relative to the influence of ASD severity, chronological age (CA), and developmental level. Poor self-regulation was unrelated to CA, developmental level, and severity of ADOS-2 restricted and repetitive behaviors, but was associated with lower ADOS-2 social affect severity. Hierarchical regression identified poor self-regulation as a unique independent predictor of adaptive behavior, with more severe dysregulation predicting poorer adaptive functioning. Results highlight the importance of early identification of deficits in self-regulation, and more specifically, of the utility of DP, when designing individually tailored treatments for young children with ASD. Autism Res 2018, 11: 1157-1165. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study explored the relationship between poor self-regulation and age, verbal and non-verbal developmental level, severity of autism symptoms and adaptive functioning in 107 children with autism under 4 years of age. Poor self-regulation was unrelated to age, developmental level, and severity of restricted and repetitive behaviors but was associated with lower social affect severity. Importantly, more severe self-regulation deficits predicted poorer adaptive functioning. En ligne : http://dx.doi.org/10.1002/aur.1953 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369
in Autism Research > 11-8 (August 2018) . - p.1157-1165[article] Brief report: Poor self-regulation as a predictor of individual differences in adaptive functioning in young children with autism spectrum disorder [Texte imprimé et/ou numérique] / M. ULJAREVIC, Auteur ; D. HEDLEY, Auteur ; R. NEVILL, Auteur ; D. W. EVANS, Auteur ; Ru Ying CAI, Auteur ; Eric BUTTER, Auteur ; J. A. MULICK, Auteur . - p.1157-1165.
Langues : Anglais (eng)
in Autism Research > 11-8 (August 2018) . - p.1157-1165
Mots-clés : adaptive behavior autism spectrum disorder dysregulated profile individual variability/heterogeneity self-regulation Index. décimale : PER Périodiques Résumé : The present study examined the link between poor self-regulation (measured by the child behavior checklist dysregulated profile [DP]) and core autism symptoms, as well as with developmental level, in a sample of 107 children with autism spectrum disorder (ASD) aged 19-46 months. We further examined the utility of DP in predicting individual differences in adaptive functioning, relative to the influence of ASD severity, chronological age (CA), and developmental level. Poor self-regulation was unrelated to CA, developmental level, and severity of ADOS-2 restricted and repetitive behaviors, but was associated with lower ADOS-2 social affect severity. Hierarchical regression identified poor self-regulation as a unique independent predictor of adaptive behavior, with more severe dysregulation predicting poorer adaptive functioning. Results highlight the importance of early identification of deficits in self-regulation, and more specifically, of the utility of DP, when designing individually tailored treatments for young children with ASD. Autism Res 2018, 11: 1157-1165. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study explored the relationship between poor self-regulation and age, verbal and non-verbal developmental level, severity of autism symptoms and adaptive functioning in 107 children with autism under 4 years of age. Poor self-regulation was unrelated to age, developmental level, and severity of restricted and repetitive behaviors but was associated with lower social affect severity. Importantly, more severe self-regulation deficits predicted poorer adaptive functioning. En ligne : http://dx.doi.org/10.1002/aur.1953 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=369 Dimensional assessment of schizotypal, psychotic, and other psychiatric traits in children and their parents: development and validation of the Childhood Oxford-Liverpool Inventory of Feelings and Experiences on a representative US sample / D. W. EVANS in Journal of Child Psychology and Psychiatry, 59-5 (May 2018)
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Titre : Dimensional assessment of schizotypal, psychotic, and other psychiatric traits in children and their parents: development and validation of the Childhood Oxford-Liverpool Inventory of Feelings and Experiences on a representative US sample Type de document : Texte imprimé et/ou numérique Auteurs : D. W. EVANS, Auteur ; L. G. LUSK, Auteur ; M. M. SLANE, Auteur ; A. M. MICHAEL, Auteur ; S. M. MYERS, Auteur ; M. ULJAREVIC, Auteur ; O. MASON, Auteur ; G. CLARIDGE, Auteur ; T. FRAZIER, Auteur Article en page(s) : p.574-585 Langues : Anglais (eng) Mots-clés : Dimensional psychiatric traits parent-child psychiatric traits schizotypy in children Index. décimale : PER Périodiques Résumé : BACKGROUND: Healthy functioning relies on a variety of perceptual, cognitive, emotional, and behavioral abilities that are distributed throughout the normal population. Variation in these traits define the wide range of neurodevelopmental (NDD) and neuropsychiatric (NPD) disorders. Here, we introduce a new measure for assessing these traits in typically developing children and children at risk for NDD and NPD from age 2 to 18 years. METHOD: The Childhood Oxford-Liverpool Inventory of Feelings and Experiences (CO-LIFE) was created as a dimensional, parent-report measure of schizotypal and psychotic traits in the general population. Parents of 2,786 children also self-reported on an adapted version of the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE-US). RESULTS: The CO-LIFE resulted in continuous distributions for the total score and for each of three factor analytically-derived subscales. Item response theory (IRT) analyses indicated strong reliability across the score range for the O-LIFE-US and the CO-LIFE. Internal consistency and test-retest reliability were high across all scales. Parent-child intraclass correlations were consistent with high heritability. The scales discriminated participants who reported a lifetime psychiatric diagnosis from those who reported no diagnosis. The O-LIFE-US and CO-LIFE scores correlated positively with the Social Responsiveness Scale 2 (SRS-2) indicating good convergent validity. CONCLUSIONS: Like the original O-LIFE, the O-LIFE-US and the CO-LIFE are valid and reliable tools that reflect the spectrum of psychiatric and schizotypal traits in the general population. Such scales are necessary for conducting family studies that aim to examine a range of psychological and behavioral traits in both children and adults and are well-suited for the Research Domain Criteria (RDoC) initiative of the NIMH. En ligne : http://dx.doi.org/10.1111/jcpp.12827 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=359
in Journal of Child Psychology and Psychiatry > 59-5 (May 2018) . - p.574-585[article] Dimensional assessment of schizotypal, psychotic, and other psychiatric traits in children and their parents: development and validation of the Childhood Oxford-Liverpool Inventory of Feelings and Experiences on a representative US sample [Texte imprimé et/ou numérique] / D. W. EVANS, Auteur ; L. G. LUSK, Auteur ; M. M. SLANE, Auteur ; A. M. MICHAEL, Auteur ; S. M. MYERS, Auteur ; M. ULJAREVIC, Auteur ; O. MASON, Auteur ; G. CLARIDGE, Auteur ; T. FRAZIER, Auteur . - p.574-585.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 59-5 (May 2018) . - p.574-585
Mots-clés : Dimensional psychiatric traits parent-child psychiatric traits schizotypy in children Index. décimale : PER Périodiques Résumé : BACKGROUND: Healthy functioning relies on a variety of perceptual, cognitive, emotional, and behavioral abilities that are distributed throughout the normal population. Variation in these traits define the wide range of neurodevelopmental (NDD) and neuropsychiatric (NPD) disorders. Here, we introduce a new measure for assessing these traits in typically developing children and children at risk for NDD and NPD from age 2 to 18 years. METHOD: The Childhood Oxford-Liverpool Inventory of Feelings and Experiences (CO-LIFE) was created as a dimensional, parent-report measure of schizotypal and psychotic traits in the general population. Parents of 2,786 children also self-reported on an adapted version of the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE-US). RESULTS: The CO-LIFE resulted in continuous distributions for the total score and for each of three factor analytically-derived subscales. Item response theory (IRT) analyses indicated strong reliability across the score range for the O-LIFE-US and the CO-LIFE. Internal consistency and test-retest reliability were high across all scales. Parent-child intraclass correlations were consistent with high heritability. The scales discriminated participants who reported a lifetime psychiatric diagnosis from those who reported no diagnosis. The O-LIFE-US and CO-LIFE scores correlated positively with the Social Responsiveness Scale 2 (SRS-2) indicating good convergent validity. CONCLUSIONS: Like the original O-LIFE, the O-LIFE-US and the CO-LIFE are valid and reliable tools that reflect the spectrum of psychiatric and schizotypal traits in the general population. Such scales are necessary for conducting family studies that aim to examine a range of psychological and behavioral traits in both children and adults and are well-suited for the Research Domain Criteria (RDoC) initiative of the NIMH. En ligne : http://dx.doi.org/10.1111/jcpp.12827 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=359 Interrelationship between insistence on sameness, effortful control and anxiety in adolescents and young adults with autism spectrum disorder (ASD) / M. ULJAREVIC in Molecular Autism, 8 (2017)
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Titre : Interrelationship between insistence on sameness, effortful control and anxiety in adolescents and young adults with autism spectrum disorder (ASD) Type de document : Texte imprimé et/ou numérique Auteurs : M. ULJAREVIC, Auteur ; A. L. RICHDALE, Auteur ; D. W. EVANS, Auteur ; Ru Ying CAI, Auteur ; S. R. LEEKAM, Auteur Article en page(s) : 36p. Langues : Anglais (eng) Mots-clés : Anxiety Autism Effortful control Insistence on sameness Self-regulation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both self-regulation and insistence on sameness (IS) are related to anxiety, which is a common feature of individuals with autism spectrum disorder (ASD). Here, we aimed to characterise the IS-self-regulation-anxiety interrelationship by investigating the potential contribution made by self-regulation, assessed via effortful control (EC), to the IS-anxiety relationship in a sample of adolescents and young adults with ASD. METHOD: Seventy-one older adolescents and younger adults with ASD (49 males, 22 females; Mage = 18.71 years, SD = 2.51, range 14.42-24.81) completed the Adult Repetitive Behaviour Questionnaire-2, Effortful Control Scale of the Adult Temperament Questionnaire and the DSM-5 Dimensional Anxiety Scales. RESULTS: IS was associated with both EC (r = -.39, p = .001) and anxiety (r = .45, p < .001), and anxiety was in turn associated with EC (r = -.44, p < .001). To characterise the nature of this interrelationship, two mediation analyses were performed using the serial mediation model in PROCESS with 5000 resamples in bootstrapping. There was a significant indirect effect of EC on anxiety, through IS (b = -.06; BCa 95% CI [-.13, -.02]), and indirect effect on anxiety through EC (b = 1.62; BCa 95% CI [.59, 3.24]) with the mediators accounting for 29.07 and 26.04% of the total effect, respectively. CONCLUSIONS: Our study provides the first exploration of the IS-anxiety-self-regulation link in ASD. The finding that lower levels of self-regulation are related both to anxiety and IS behaviours points to self-regulation as a viable intervention target for both anxiety and IS behaviours. En ligne : http://dx.doi.org/10.1186/s13229-017-0158-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331
in Molecular Autism > 8 (2017) . - 36p.[article] Interrelationship between insistence on sameness, effortful control and anxiety in adolescents and young adults with autism spectrum disorder (ASD) [Texte imprimé et/ou numérique] / M. ULJAREVIC, Auteur ; A. L. RICHDALE, Auteur ; D. W. EVANS, Auteur ; Ru Ying CAI, Auteur ; S. R. LEEKAM, Auteur . - 36p.
Langues : Anglais (eng)
in Molecular Autism > 8 (2017) . - 36p.
Mots-clés : Anxiety Autism Effortful control Insistence on sameness Self-regulation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both self-regulation and insistence on sameness (IS) are related to anxiety, which is a common feature of individuals with autism spectrum disorder (ASD). Here, we aimed to characterise the IS-self-regulation-anxiety interrelationship by investigating the potential contribution made by self-regulation, assessed via effortful control (EC), to the IS-anxiety relationship in a sample of adolescents and young adults with ASD. METHOD: Seventy-one older adolescents and younger adults with ASD (49 males, 22 females; Mage = 18.71 years, SD = 2.51, range 14.42-24.81) completed the Adult Repetitive Behaviour Questionnaire-2, Effortful Control Scale of the Adult Temperament Questionnaire and the DSM-5 Dimensional Anxiety Scales. RESULTS: IS was associated with both EC (r = -.39, p = .001) and anxiety (r = .45, p < .001), and anxiety was in turn associated with EC (r = -.44, p < .001). To characterise the nature of this interrelationship, two mediation analyses were performed using the serial mediation model in PROCESS with 5000 resamples in bootstrapping. There was a significant indirect effect of EC on anxiety, through IS (b = -.06; BCa 95% CI [-.13, -.02]), and indirect effect on anxiety through EC (b = 1.62; BCa 95% CI [.59, 3.24]) with the mediators accounting for 29.07 and 26.04% of the total effect, respectively. CONCLUSIONS: Our study provides the first exploration of the IS-anxiety-self-regulation link in ASD. The finding that lower levels of self-regulation are related both to anxiety and IS behaviours points to self-regulation as a viable intervention target for both anxiety and IS behaviours. En ligne : http://dx.doi.org/10.1186/s13229-017-0158-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=331 Short report: relationship between restricted and repetitive behaviours in children with autism spectrum disorder and their parents / M. ULJAREVIC in Molecular Autism, 7 (2016)
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Titre : Short report: relationship between restricted and repetitive behaviours in children with autism spectrum disorder and their parents Type de document : Texte imprimé et/ou numérique Auteurs : M. ULJAREVIC, Auteur ; D. W. EVANS, Auteur ; Gail A. ALVARES, Auteur ; Andrew J. O. WHITEHOUSE, Auteur Article en page(s) : 29p. Langues : Anglais (eng) Mots-clés : Adolescent Adult Autism Spectrum Disorder/diagnosis/physiopathology Child Child Behavior/physiology Child, Preschool Female Humans Male Middle Aged Parents/psychology Phenotype Stereotyped Behavior Autism Broader Autism Phenotype Parents Repetitive behaviours Index. décimale : PER Périodiques Résumé : BACKGROUND: Restricted and repetitive behaviours (RRBs) constitute a core symptom domain of autism spectrum disorder (ASD). However, the nature of RRBs in the context of the Broader Autism Phenotype (BAP) is not well understood. In particular, the relationship between RRBs in ASD probands and their parents remains largely unexplored. The current study explored the link between parental RRBs, measured via Interest in Patterns and Resistance to Changes subscales of the Autism Quotient and their children's RRBs, measured via Autism Diagnostic Observation Schedule RRB standardized domain score. FINDINGS: Having both parents within the top 20% of their RRB scores was associated with an increase of RRB scores for their children; however, no parent-of-origin effects were identified. Although the trend was observed for both Interest in Patterns and Resistance to Changes subscale, it was only statistically significant for Interest in Patterns. CONCLUSIONS: This paper provides significant contribution to our understanding of association between RRBs in parents and their children with ASD. Future work should also address the BAP in distinct genetic subtypes (whole chromosome aneuploidies, single gene mutations, copy number variations) of neurodevelopmental and neuropsychiatric disorders that involve RRBs. En ligne : http://dx.doi.org/10.1186/s13229-016-0091-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329
in Molecular Autism > 7 (2016) . - 29p.[article] Short report: relationship between restricted and repetitive behaviours in children with autism spectrum disorder and their parents [Texte imprimé et/ou numérique] / M. ULJAREVIC, Auteur ; D. W. EVANS, Auteur ; Gail A. ALVARES, Auteur ; Andrew J. O. WHITEHOUSE, Auteur . - 29p.
Langues : Anglais (eng)
in Molecular Autism > 7 (2016) . - 29p.
Mots-clés : Adolescent Adult Autism Spectrum Disorder/diagnosis/physiopathology Child Child Behavior/physiology Child, Preschool Female Humans Male Middle Aged Parents/psychology Phenotype Stereotyped Behavior Autism Broader Autism Phenotype Parents Repetitive behaviours Index. décimale : PER Périodiques Résumé : BACKGROUND: Restricted and repetitive behaviours (RRBs) constitute a core symptom domain of autism spectrum disorder (ASD). However, the nature of RRBs in the context of the Broader Autism Phenotype (BAP) is not well understood. In particular, the relationship between RRBs in ASD probands and their parents remains largely unexplored. The current study explored the link between parental RRBs, measured via Interest in Patterns and Resistance to Changes subscales of the Autism Quotient and their children's RRBs, measured via Autism Diagnostic Observation Schedule RRB standardized domain score. FINDINGS: Having both parents within the top 20% of their RRB scores was associated with an increase of RRB scores for their children; however, no parent-of-origin effects were identified. Although the trend was observed for both Interest in Patterns and Resistance to Changes subscale, it was only statistically significant for Interest in Patterns. CONCLUSIONS: This paper provides significant contribution to our understanding of association between RRBs in parents and their children with ASD. Future work should also address the BAP in distinct genetic subtypes (whole chromosome aneuploidies, single gene mutations, copy number variations) of neurodevelopmental and neuropsychiatric disorders that involve RRBs. En ligne : http://dx.doi.org/10.1186/s13229-016-0091-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329