Measuring autism with the ADOS-2 using a bifactor model / Phebe ALBERT in Autism Research, 17-12 (December 2024)  

Public ISBD [article]  inAutism Research > 17-12 (December 2024) . - p.2487-2502 Titre : Measuring autism with the ADOS-2 using a bifactor model Type de document : texte imprimé Auteurs : Phebe ALBERT, Auteur ; Gal KALDES, Auteur ; Erin TULLY, Auteur ; MaryAnn ROMSKI, Auteur ; Robin D. MORRIS, Auteur ; Rose A. SEVCIK, Auteur ; Laura DILLY, Auteur Article en page(s) : p.2487-2502 Langues : Anglais (eng) Mots-clés : autism diagnostic observation schedule, second edition  autism spectrum disorder  bifactor model  nonverbal cognition  verbal cognition Index. décimale : PER Périodiques Résumé : Abstract The measurement of autism characteristics can be challenging due to variability of social impairments and restricted and repetitive behaviors or interests (RRBs). Psychometrically strong measures such as the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) can improve our capacity for thorough autism assessment. The conceptualization of the ADOS-2 has been shaped by research exploring the structure of its items, which evaluate autism traits associated with social affect and RRBs. Continuously refining our understanding of these items and their relations to other characteristics, such as cognition, is crucial for more accurate autism assessment and diagnosis. This study used data from a sample of 188 school-age children with mostly average cognitive functioning referred for clinical autism evaluations to (1) test the dimensionality of the ADOS-2, Module 3 (appropriate for children with relatively higher verbal ability), across two sets of items (i.e., algorithm only, algorithm with three non-algorithm RRB items) using confirmatory factor analysis (CFA) and (2) examine the relations of cognition to the dimensions tested in the ADOS-2. A bifactor model, featuring a general autism trait and two subfactors (RRB and Social Affect), provided superior fit for algorithm-only and algorithm with three non-algorithm items. Cognitive functioning was not significantly related to the general or specific factors in the model with only algorithm items. While the findings support the validity of the ADOS-2, it may not fully capture RRBs among children referred for autism. This study enhances our understanding of the ADOS-2, highlighting the utility of a bifactor model for characterizing its dimensionality, measuring autism traits with minimal cognitive influence, and identifying its limitations in assessing RRBs. En ligne : https://dx.doi.org/10.1002/aur.3245 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=544 [article] Measuring autism with the ADOS-2 using a bifactor model [texte imprimé] / Phebe ALBERT, Auteur ; Gal KALDES, Auteur ; Erin TULLY, Auteur ; MaryAnn ROMSKI, Auteur ; Robin D. MORRIS, Auteur ; Rose A. SEVCIK, Auteur ; Laura DILLY, Auteur . - p.2487-2502. Langues : Anglais (eng) in Autism Research > 17-12 (December 2024) . - p.2487-2502 Mots-clés : autism diagnostic observation schedule, second edition  autism spectrum disorder  bifactor model  nonverbal cognition  verbal cognition Index. décimale : PER Périodiques Résumé : Abstract The measurement of autism characteristics can be challenging due to variability of social impairments and restricted and repetitive behaviors or interests (RRBs). Psychometrically strong measures such as the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2) can improve our capacity for thorough autism assessment. The conceptualization of the ADOS-2 has been shaped by research exploring the structure of its items, which evaluate autism traits associated with social affect and RRBs. Continuously refining our understanding of these items and their relations to other characteristics, such as cognition, is crucial for more accurate autism assessment and diagnosis. This study used data from a sample of 188 school-age children with mostly average cognitive functioning referred for clinical autism evaluations to (1) test the dimensionality of the ADOS-2, Module 3 (appropriate for children with relatively higher verbal ability), across two sets of items (i.e., algorithm only, algorithm with three non-algorithm RRB items) using confirmatory factor analysis (CFA) and (2) examine the relations of cognition to the dimensions tested in the ADOS-2. A bifactor model, featuring a general autism trait and two subfactors (RRB and Social Affect), provided superior fit for algorithm-only and algorithm with three non-algorithm items. Cognitive functioning was not significantly related to the general or specific factors in the model with only algorithm items. While the findings support the validity of the ADOS-2, it may not fully capture RRBs among children referred for autism. This study enhances our understanding of the ADOS-2, highlighting the utility of a bifactor model for characterizing its dimensionality, measuring autism traits with minimal cognitive influence, and identifying its limitations in assessing RRBs. En ligne : https://dx.doi.org/10.1002/aur.3245 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=544

Properties of white matter tract diffusivity in children with developmental dyslexia and comorbid attention deficit/hyperactivity disorder / Ryan J. SLABY in Journal of Neurodevelopmental Disorders, 15 (2023)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 15 (2023) Titre : Properties of white matter tract diffusivity in children with developmental dyslexia and comorbid attention deficit/hyperactivity disorder Type de document : texte imprimé Auteurs : Ryan J. SLABY, Auteur ; C Nikki ARRINGTON, Auteur ; Jeffrey MALINS, Auteur ; Rose A. SEVCIK, Auteur ; Kenneth R. PUGH, Auteur ; Robin MORRIS, Auteur Langues : Anglais (eng) Mots-clés : White Matter/physiopathology  Dyslexia/complications/physiopathology  Attention Deficit Disorder with Hyperactivity/complications/physiopathology  Analysis of Variance  Attention  Humans  Child  Reading  Executive Function  Adhd  Comorbidity  Dti  Dyslexia  Fa  Slf  White matter Index. décimale : PER Périodiques Résumé : BACKGROUND: Developmental dyslexia (DD) and attention deficit/hyperactivity disorder (ADHD) are highly comorbid neurodevelopmental disorders. Individuals with DD or ADHD have both been shown to have deficits in white matter tracts associated with reading and attentional control networks. However, white matter diffusivity in individuals comorbid with both DD and ADHD (DD + ADHD) has not been specifically explored. METHODS: Participants were 3(rd) and 4(th) graders (age range = 7 to 11 years; SD = 0.69) from three diagnostic groups ((DD (n = 40), DD + ADHD (n = 22), and typical developing (TD) (n = 20)). Behavioral measures of reading and attention alongside measures of white matter diffusivity were collected for all participants. RESULTS: DD + ADHD and TD groups differed in mean fractional anisotropy (FA) for the left and right Superior Longitudinal Fasciculus (SLF)-Parietal Terminations and SLF-Temporal Terminations. Mean FA for the DD group across these SLF tracts fell between the lower DD + ADHD and higher TD averages. No differences in mean diffusivity nor significant brain-behavior relations were found. CONCLUSIONS: Findings suggest that WM diffusivity in the SLF increases along a continuum across DD + ADHD, DD, and TD. En ligne : https://dx.doi.org/10.1186/s11689-023-09495-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575 [article] Properties of white matter tract diffusivity in children with developmental dyslexia and comorbid attention deficit/hyperactivity disorder [texte imprimé] / Ryan J. SLABY, Auteur ; C Nikki ARRINGTON, Auteur ; Jeffrey MALINS, Auteur ; Rose A. SEVCIK, Auteur ; Kenneth R. PUGH, Auteur ; Robin MORRIS, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 15 (2023) Mots-clés : White Matter/physiopathology  Dyslexia/complications/physiopathology  Attention Deficit Disorder with Hyperactivity/complications/physiopathology  Analysis of Variance  Attention  Humans  Child  Reading  Executive Function  Adhd  Comorbidity  Dti  Dyslexia  Fa  Slf  White matter Index. décimale : PER Périodiques Résumé : BACKGROUND: Developmental dyslexia (DD) and attention deficit/hyperactivity disorder (ADHD) are highly comorbid neurodevelopmental disorders. Individuals with DD or ADHD have both been shown to have deficits in white matter tracts associated with reading and attentional control networks. However, white matter diffusivity in individuals comorbid with both DD and ADHD (DD + ADHD) has not been specifically explored. METHODS: Participants were 3(rd) and 4(th) graders (age range = 7 to 11 years; SD = 0.69) from three diagnostic groups ((DD (n = 40), DD + ADHD (n = 22), and typical developing (TD) (n = 20)). Behavioral measures of reading and attention alongside measures of white matter diffusivity were collected for all participants. RESULTS: DD + ADHD and TD groups differed in mean fractional anisotropy (FA) for the left and right Superior Longitudinal Fasciculus (SLF)-Parietal Terminations and SLF-Temporal Terminations. Mean FA for the DD group across these SLF tracts fell between the lower DD + ADHD and higher TD averages. No differences in mean diffusivity nor significant brain-behavior relations were found. CONCLUSIONS: Findings suggest that WM diffusivity in the SLF increases along a continuum across DD + ADHD, DD, and TD. En ligne : https://dx.doi.org/10.1186/s11689-023-09495-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575

The System for Augmenting Language: Implications for Young Children with Autism Spectrum Disorders / MaryAnn ROMSKI

Public ISBD in Autism Spectrum Disorders and AAC / Pat MIRENDA Titre : The System for Augmenting Language: Implications for Young Children with Autism Spectrum Disorders Type de document : texte imprimé Auteurs : MaryAnn ROMSKI, Auteur ; Rose A. SEVCIK, Auteur ; Ashlyn SMITH, Auteur ; R. Michael BARKER, Auteur ; Stephanie FOLAN, Auteur ; Andrea BARTON-HULSEY, Auteur Année de publication : 2009 Importance : p.219-245 Langues : Anglais (eng) Index. décimale : COM-C COM-C - Communication Alternative Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=264 in Autism Spectrum Disorders and AAC / Pat MIRENDA The System for Augmenting Language: Implications for Young Children with Autism Spectrum Disorders [texte imprimé] / MaryAnn ROMSKI, Auteur ; Rose A. SEVCIK, Auteur ; Ashlyn SMITH, Auteur ; R. Michael BARKER, Auteur ; Stephanie FOLAN, Auteur ; Andrea BARTON-HULSEY, Auteur . - 2009 . - p.219-245. Langues : Anglais (eng) Index. décimale : COM-C COM-C - Communication Alternative Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=264

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