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Auteur Leonard ABBEDUTO |
Documents disponibles écrits par cet auteur (22)



ASD Comorbidity in Fragile X Syndrome: Symptom Profile and Predictors of Symptom Severity in Adolescent and Young Adult Males / Leonard ABBEDUTO in Journal of Autism and Developmental Disorders, 49-3 (March 2019)
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Titre : ASD Comorbidity in Fragile X Syndrome: Symptom Profile and Predictors of Symptom Severity in Adolescent and Young Adult Males Type de document : Texte imprimé et/ou numérique Auteurs : Leonard ABBEDUTO, Auteur ; A. J. THURMAN, Auteur ; A. MCDUFFIE, Auteur ; J. KLUSEK, Auteur ; R. T. FEIGLES, Auteur ; W. Ted BROWN, Auteur ; D. J. HARVEY, Auteur ; T. ADAYEV, Auteur ; G. LAFAUCI, Auteur ; C. DOBKINS, Auteur ; J. E. ROBERTS, Auteur Article en page(s) : p.960-977 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Fmrp Fragile X syndrome Iq Language Psychiatric symptoms Index. décimale : PER Périodiques Résumé : Many males with FXS meet criteria for ASD. This study was designed to (1) describe ASD symptoms in adolescent and young adult males with FXS (n = 44) and (2) evaluate the contributions to ASD severity of cognitive, language, and psychiatric factors, as well as FMRP (the protein deficient in FXS). A few ASD symptoms on the ADOS-2 were universal in the sample. There was less impairment in restricted and repetitive behaviors (RRB) than in the social affective (SA) domain. The best predictor of overall ASD severity and SA severity was expressive syntactic ability. RRB severity was best predicted by the psychiatric factors. Implications for clinical practice and for understanding the ASD comorbidity in FXS are discussed. En ligne : http://dx.doi.org/10.1007/s10803-018-3796-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386
in Journal of Autism and Developmental Disorders > 49-3 (March 2019) . - p.960-977[article] ASD Comorbidity in Fragile X Syndrome: Symptom Profile and Predictors of Symptom Severity in Adolescent and Young Adult Males [Texte imprimé et/ou numérique] / Leonard ABBEDUTO, Auteur ; A. J. THURMAN, Auteur ; A. MCDUFFIE, Auteur ; J. KLUSEK, Auteur ; R. T. FEIGLES, Auteur ; W. Ted BROWN, Auteur ; D. J. HARVEY, Auteur ; T. ADAYEV, Auteur ; G. LAFAUCI, Auteur ; C. DOBKINS, Auteur ; J. E. ROBERTS, Auteur . - p.960-977.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 49-3 (March 2019) . - p.960-977
Mots-clés : Autism spectrum disorder Fmrp Fragile X syndrome Iq Language Psychiatric symptoms Index. décimale : PER Périodiques Résumé : Many males with FXS meet criteria for ASD. This study was designed to (1) describe ASD symptoms in adolescent and young adult males with FXS (n = 44) and (2) evaluate the contributions to ASD severity of cognitive, language, and psychiatric factors, as well as FMRP (the protein deficient in FXS). A few ASD symptoms on the ADOS-2 were universal in the sample. There was less impairment in restricted and repetitive behaviors (RRB) than in the social affective (SA) domain. The best predictor of overall ASD severity and SA severity was expressive syntactic ability. RRB severity was best predicted by the psychiatric factors. Implications for clinical practice and for understanding the ASD comorbidity in FXS are discussed. En ligne : http://dx.doi.org/10.1007/s10803-018-3796-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386 Associations Among Sex, Cognitive Ability, and Autism Symptoms in Individuals with Down Syndrome / Audra STERLING ; Jamie EDGIN ; Debra R. HAMILTON ; Elizabeth BERRY-KRAVIS ; Amanda DIMACHKIE NUNNALLY ; Angela John THURMAN ; Leonard ABBEDUTO in Journal of Autism and Developmental Disorders, 54-1 (January 2024)
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Titre : Associations Among Sex, Cognitive Ability, and Autism Symptoms in Individuals with Down Syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Audra STERLING, Auteur ; Jamie EDGIN, Auteur ; Debra R. HAMILTON, Auteur ; Elizabeth BERRY-KRAVIS, Auteur ; Amanda DIMACHKIE NUNNALLY, Auteur ; Angela John THURMAN, Auteur ; Leonard ABBEDUTO, Auteur Article en page(s) : p.301-311 Index. décimale : PER Périodiques Résumé : This study explores sex-differences in (a) rates and profiles of autism symptoms as well as in (b) the contribution of intellectual quotient (IQ) to autism symptom presentation in Down syndrome (DS). Participants were 40 males and 38 females with DS, aged 6 to 23 years. Autism symptoms were rated through the Autism Diagnostic Observation Schedule-Second Edition (ADOS-2). Results show no sex differences in the ADOS-2 Calibrated Severity Scores (CSS). However, only females with DS who are classified as DS-Only have higher scores on verbal IQ than those classified as DS?+?autism. Furthermore, associations between IQ and all CSSs are found for females, but not for males. Findings suggest that verbal cognition may play differential roles for females and males with DS. En ligne : https://doi.org/10.1007/s10803-022-05779-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520
in Journal of Autism and Developmental Disorders > 54-1 (January 2024) . - p.301-311[article] Associations Among Sex, Cognitive Ability, and Autism Symptoms in Individuals with Down Syndrome [Texte imprimé et/ou numérique] / Audra STERLING, Auteur ; Jamie EDGIN, Auteur ; Debra R. HAMILTON, Auteur ; Elizabeth BERRY-KRAVIS, Auteur ; Amanda DIMACHKIE NUNNALLY, Auteur ; Angela John THURMAN, Auteur ; Leonard ABBEDUTO, Auteur . - p.301-311.
in Journal of Autism and Developmental Disorders > 54-1 (January 2024) . - p.301-311
Index. décimale : PER Périodiques Résumé : This study explores sex-differences in (a) rates and profiles of autism symptoms as well as in (b) the contribution of intellectual quotient (IQ) to autism symptom presentation in Down syndrome (DS). Participants were 40 males and 38 females with DS, aged 6 to 23 years. Autism symptoms were rated through the Autism Diagnostic Observation Schedule-Second Edition (ADOS-2). Results show no sex differences in the ADOS-2 Calibrated Severity Scores (CSS). However, only females with DS who are classified as DS-Only have higher scores on verbal IQ than those classified as DS?+?autism. Furthermore, associations between IQ and all CSSs are found for females, but not for males. Findings suggest that verbal cognition may play differential roles for females and males with DS. En ligne : https://doi.org/10.1007/s10803-022-05779-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520 Autism Symptomatology in Boys with Fragile X Syndrome: A Cross Sectional Developmental Trajectories Comparison with Nonsyndromic Autism Spectrum Disorder / Angela John THURMAN in Journal of Autism and Developmental Disorders, 45-9 (September 2015)
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Titre : Autism Symptomatology in Boys with Fragile X Syndrome: A Cross Sectional Developmental Trajectories Comparison with Nonsyndromic Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Angela John THURMAN, Auteur ; Andrea MCDUFFIE, Auteur ; Sara T. KOVER, Auteur ; Randi J. HAGERMAN, Auteur ; Leonard ABBEDUTO, Auteur Article en page(s) : p.2816-2832 Langues : Anglais (eng) Mots-clés : Fragile X syndrome Autism spectrum disorder Behavioral phenotype Nonverbal cognition Expressive vocabulary Developmental trajectory Index. décimale : PER Périodiques Résumé : Although males with fragile X syndrome (FXS) are frequently described as demonstrating autism symptomatology, there is much debate regarding whether the behavioral symptoms representing the core domains of autism are the result of the same or different underlying neurological/psychological mechanisms. The present study used a cross-sectional developmental trajectories approach to compare the profiles of autism symptomatology relative to chronological age (CA), nonverbal IQ, and expressive vocabulary ability between individuals with FXS and individuals with nonsyndromic ASD. Results suggest that the onset of autism symptoms and their developmental trajectories in males with FXS differ in important ways as a function of CA, nonverbal cognitive ability, and expressive vocabulary relative to males with nonsyndromic ASD. Theoretical and clinical implications are discussed. En ligne : http://dx.doi.org/10.1007/s10803-015-2443-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=267
in Journal of Autism and Developmental Disorders > 45-9 (September 2015) . - p.2816-2832[article] Autism Symptomatology in Boys with Fragile X Syndrome: A Cross Sectional Developmental Trajectories Comparison with Nonsyndromic Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Angela John THURMAN, Auteur ; Andrea MCDUFFIE, Auteur ; Sara T. KOVER, Auteur ; Randi J. HAGERMAN, Auteur ; Leonard ABBEDUTO, Auteur . - p.2816-2832.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-9 (September 2015) . - p.2816-2832
Mots-clés : Fragile X syndrome Autism spectrum disorder Behavioral phenotype Nonverbal cognition Expressive vocabulary Developmental trajectory Index. décimale : PER Périodiques Résumé : Although males with fragile X syndrome (FXS) are frequently described as demonstrating autism symptomatology, there is much debate regarding whether the behavioral symptoms representing the core domains of autism are the result of the same or different underlying neurological/psychological mechanisms. The present study used a cross-sectional developmental trajectories approach to compare the profiles of autism symptomatology relative to chronological age (CA), nonverbal IQ, and expressive vocabulary ability between individuals with FXS and individuals with nonsyndromic ASD. Results suggest that the onset of autism symptoms and their developmental trajectories in males with FXS differ in important ways as a function of CA, nonverbal cognitive ability, and expressive vocabulary relative to males with nonsyndromic ASD. Theoretical and clinical implications are discussed. En ligne : http://dx.doi.org/10.1007/s10803-015-2443-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=267 Brain function and gaze fixation during facial-emotion processing in fragile X and autism / Kim M. DALTON in Autism Research, 1-4 (August 2008)
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Titre : Brain function and gaze fixation during facial-emotion processing in fragile X and autism Type de document : Texte imprimé et/ou numérique Auteurs : Kim M. DALTON, Auteur ; Laura HOLSEN, Auteur ; Leonard ABBEDUTO, Auteur ; Richard J. DAVIDSON, Auteur Année de publication : 2008 Article en page(s) : p.231-239 Langues : Anglais (eng) Mots-clés : fragile-X-syndrome autism face-processing brain-function fMRI Index. décimale : PER Périodiques Résumé : Fragile X syndrome (FXS) is the most commonly known genetic disorder associated with autism spectrum disorder (ASD). Overlapping features in these populations include gaze aversion, communication deficits, and social withdrawal. Although the association between FXS and ASD has been well documented at the behavioral level, the underlying neural mechanisms associated with the social/emotional deficits in these groups remain unclear. We collected functional brain images and eye-gaze fixations from 9 individuals with FXS and 14 individuals with idiopathic ASD, as well as 15 typically developing (TD) individuals, while they performed a facial-emotion discrimination task. The FXS group showed a similar yet less aberrant pattern of gaze fixations compared with the ASD group. The FXS group also showed fusiform gyrus (FG) hypoactivation compared with the TD control group. Activation in FG was strongly and positively associated with average eye fixation and negatively associated with ASD characteristics in the FXS group. The FXS group displayed significantly greater activation than both the TD control and ASD groups in the left hippocampus (HIPP), left superior temporal gyrus (STG), right insula (INS), and left postcentral gyrus (PCG). These group differences in brain activation are important as they suggest unique underlying face-processing neural circuitry in FXS versus idiopathic ASD, largely supporting the hypothesis that ASD characteristics in FXS and idiopathic ASD reflect partially divergent impairments at the neural level, at least in FXS individuals without a co-morbid diagnosis of ASD. En ligne : http://dx.doi.org/10.1002/aur.32 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=932
in Autism Research > 1-4 (August 2008) . - p.231-239[article] Brain function and gaze fixation during facial-emotion processing in fragile X and autism [Texte imprimé et/ou numérique] / Kim M. DALTON, Auteur ; Laura HOLSEN, Auteur ; Leonard ABBEDUTO, Auteur ; Richard J. DAVIDSON, Auteur . - 2008 . - p.231-239.
Langues : Anglais (eng)
in Autism Research > 1-4 (August 2008) . - p.231-239
Mots-clés : fragile-X-syndrome autism face-processing brain-function fMRI Index. décimale : PER Périodiques Résumé : Fragile X syndrome (FXS) is the most commonly known genetic disorder associated with autism spectrum disorder (ASD). Overlapping features in these populations include gaze aversion, communication deficits, and social withdrawal. Although the association between FXS and ASD has been well documented at the behavioral level, the underlying neural mechanisms associated with the social/emotional deficits in these groups remain unclear. We collected functional brain images and eye-gaze fixations from 9 individuals with FXS and 14 individuals with idiopathic ASD, as well as 15 typically developing (TD) individuals, while they performed a facial-emotion discrimination task. The FXS group showed a similar yet less aberrant pattern of gaze fixations compared with the ASD group. The FXS group also showed fusiform gyrus (FG) hypoactivation compared with the TD control group. Activation in FG was strongly and positively associated with average eye fixation and negatively associated with ASD characteristics in the FXS group. The FXS group displayed significantly greater activation than both the TD control and ASD groups in the left hippocampus (HIPP), left superior temporal gyrus (STG), right insula (INS), and left postcentral gyrus (PCG). These group differences in brain activation are important as they suggest unique underlying face-processing neural circuitry in FXS versus idiopathic ASD, largely supporting the hypothesis that ASD characteristics in FXS and idiopathic ASD reflect partially divergent impairments at the neural level, at least in FXS individuals without a co-morbid diagnosis of ASD. En ligne : http://dx.doi.org/10.1002/aur.32 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=932 Considerations from the 2017 IMFAR Preconference on Measuring Meaningful Outcomes from School-Age to Adulthood / Vanessa H. BAL in Autism Research, 11-11 (November 2018)
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Titre : Considerations from the 2017 IMFAR Preconference on Measuring Meaningful Outcomes from School-Age to Adulthood Type de document : Texte imprimé et/ou numérique Auteurs : Vanessa H. BAL, Auteur ; R. L. HENDREN, Auteur ; Tony CHARMAN, Auteur ; Leonard ABBEDUTO, Auteur ; Connie KASARI, Auteur ; L. G. KLINGER, Auteur ; W. ENCE, Auteur ; T. GLAVIN, Auteur ; G. LYONS, Auteur ; E. ROSENBERG, Auteur Article en page(s) : p.1446-1454 Langues : Anglais (eng) Mots-clés : lifespan outcome stakeholders strengths Index. décimale : PER Périodiques Résumé : The autism spectrum disorder (ASD) research community is increasingly considering the importance of measuring outcomes that are meaningful to individuals with ASD and their families. The 2017 IMFAR preconference aimed to gain the perspectives of how to define and measure "meaningful outcomes" from 280 participants, including people with ASD and their families, service providers, and researchers. Six themes were identified: (a) the definition of "outcome" varies by context and perspective; (b) the need to broaden the scope of what researchers measure; (c) the need for new assessment tools; (d) the need to expand data analytic methods; (e) where to focus (with emphasis on considering different developmental stages and aspects of diversity); and (f) a need for community partnerships to bridge research and daily practice. The challenge that the research community now faces is how to move the evidence base for clinical practice forward while keeping alive the divergence of views and considerations that are relevant for thinking about complex outcomes for the highly heterogeneous group of individuals with ASD. This commentary provides recommendations, with an emphasis on lifespan viewpoints that encompass individual strengths and preferences. Autism Research 2018, 11: 1446-1454. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: The 2017 IMFAR preconference aimed to gain the perspectives of how to define and measure "meaningful outcomes" from a variety of stakeholders. This commentary outlines the six themes identified from keynote and panel presentations and audience-participated discussions. Recommendations are made to emphasize perspectives that look across the lifespan and encompass individual strengths and preferences. En ligne : http://dx.doi.org/10.1002/aur.2034 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370
in Autism Research > 11-11 (November 2018) . - p.1446-1454[article] Considerations from the 2017 IMFAR Preconference on Measuring Meaningful Outcomes from School-Age to Adulthood [Texte imprimé et/ou numérique] / Vanessa H. BAL, Auteur ; R. L. HENDREN, Auteur ; Tony CHARMAN, Auteur ; Leonard ABBEDUTO, Auteur ; Connie KASARI, Auteur ; L. G. KLINGER, Auteur ; W. ENCE, Auteur ; T. GLAVIN, Auteur ; G. LYONS, Auteur ; E. ROSENBERG, Auteur . - p.1446-1454.
Langues : Anglais (eng)
in Autism Research > 11-11 (November 2018) . - p.1446-1454
Mots-clés : lifespan outcome stakeholders strengths Index. décimale : PER Périodiques Résumé : The autism spectrum disorder (ASD) research community is increasingly considering the importance of measuring outcomes that are meaningful to individuals with ASD and their families. The 2017 IMFAR preconference aimed to gain the perspectives of how to define and measure "meaningful outcomes" from 280 participants, including people with ASD and their families, service providers, and researchers. Six themes were identified: (a) the definition of "outcome" varies by context and perspective; (b) the need to broaden the scope of what researchers measure; (c) the need for new assessment tools; (d) the need to expand data analytic methods; (e) where to focus (with emphasis on considering different developmental stages and aspects of diversity); and (f) a need for community partnerships to bridge research and daily practice. The challenge that the research community now faces is how to move the evidence base for clinical practice forward while keeping alive the divergence of views and considerations that are relevant for thinking about complex outcomes for the highly heterogeneous group of individuals with ASD. This commentary provides recommendations, with an emphasis on lifespan viewpoints that encompass individual strengths and preferences. Autism Research 2018, 11: 1446-1454. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: The 2017 IMFAR preconference aimed to gain the perspectives of how to define and measure "meaningful outcomes" from a variety of stakeholders. This commentary outlines the six themes identified from keynote and panel presentations and audience-participated discussions. Recommendations are made to emphasize perspectives that look across the lifespan and encompass individual strengths and preferences. En ligne : http://dx.doi.org/10.1002/aur.2034 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370 Consistency and reliability of automated language measures across expressive language samples in autism / Heather MACFARLANE in Autism Research, 16-4 (April 2023)
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PermalinkContributions of phonological and verbal working memory to language development in adolescents with fragile X syndrome / E. I. PIERPONT in Journal of Neurodevelopmental Disorders, 3-4 (December 2011)
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PermalinkDistance delivery of a parent-implemented language intervention for young boys with fragile X syndrome / Lauren BULLARD in Autism & Developmental Language Impairments, 2 (January-December 2017)
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PermalinkGenetic and maternal predictors of cognitive and behavioral trajectories in females with fragile X syndrome / L. DEL HOYO SORIANO in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)
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PermalinkIncreasing verbal responsiveness in parents of children with autism:a pilot study / Courtney E. VENKER in Autism, 16-6 (November 2012)
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PermalinkInvestigating Word Learning in Fragile X Syndrome: A Fast-Mapping Study / Andrea MCDUFFIE in Journal of Autism and Developmental Disorders, 43-7 (July 2013)
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PermalinkLanguage Skills of Males with Fragile X Syndrome or Nonsyndromic Autism Spectrum Disorder / Angela John THURMAN in Journal of Autism and Developmental Disorders, 47-3 (March 2017)
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PermalinkLearning Words in a Social World: Impairments Associated With ASD and Fragile X Syndrome / Andrea MCDUFFIE
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PermalinkMaternal Pragmatic Language Difficulties in the FMR1 Premutation and the Broad Autism Phenotype: Associations with Individual and Family Outcomes / J. KLUSEK in Journal of Autism and Developmental Disorders, 52-2 (February 2022)
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PermalinkMethods for acquiring MRI data in children with autism spectrum disorder and intellectual impairment without the use of sedation / Christine W. NORDAHL in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)
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