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Détail de l'auteur
Auteur Megan NORRIS
Documents disponibles écrits par cet auteur



Construct Validity of the Autism Impact Measure (AIM) / Micah O MAZUREK in Journal of Autism and Developmental Disorders, 50-7 (July 2020)
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[article]
in Journal of Autism and Developmental Disorders > 50-7 (July 2020) . - p.2307-2319
Titre : Construct Validity of the Autism Impact Measure (AIM) Type de document : texte imprimé Auteurs : Micah O MAZUREK, Auteur ; Coleen CARLSON, Auteur ; Mary BAKER-ERICZEN, Auteur ; Eric BUTTER, Auteur ; Megan NORRIS, Auteur ; Stephen KANNE, Auteur Article en page(s) : p.2307-2319 Langues : Anglais (eng) Mots-clés : Assessment Autism spectrum disorder Autism symptoms Measurement Psychometrics Treatment outcome Index. décimale : PER Périodiques Résumé : The Autism Impact Measure (AIM) was designed to track incremental change in frequency and impact of core ASD symptoms. The current study examined the structural and convergent validity of the AIM in a large sample of children with ASD. The results of a series of exploratory and confirmatory factor analyses yielded a final model with five theoretically and empirically meaningful subdomains: Repetitive Behavior, Atypical Behavior, Communication, Social Reciprocity, and Peer Interaction. The final model showed very good fit both overall and for each of the five factors, indicating excellent structural validity. AIM subdomain scores were significantly correlated with measures of similar constructs across all five domains. The results provide further support for the psychometric properties of the AIM. En ligne : http://dx.doi.org/10.1007/s10803-018-3462-8 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4267 [article] Construct Validity of the Autism Impact Measure (AIM) [texte imprimé] / Micah O MAZUREK, Auteur ; Coleen CARLSON, Auteur ; Mary BAKER-ERICZEN, Auteur ; Eric BUTTER, Auteur ; Megan NORRIS, Auteur ; Stephen KANNE, Auteur . - p.2307-2319.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 50-7 (July 2020) . - p.2307-2319
Mots-clés : Assessment Autism spectrum disorder Autism symptoms Measurement Psychometrics Treatment outcome Index. décimale : PER Périodiques Résumé : The Autism Impact Measure (AIM) was designed to track incremental change in frequency and impact of core ASD symptoms. The current study examined the structural and convergent validity of the AIM in a large sample of children with ASD. The results of a series of exploratory and confirmatory factor analyses yielded a final model with five theoretically and empirically meaningful subdomains: Repetitive Behavior, Atypical Behavior, Communication, Social Reciprocity, and Peer Interaction. The final model showed very good fit both overall and for each of the five factors, indicating excellent structural validity. AIM subdomain scores were significantly correlated with measures of similar constructs across all five domains. The results provide further support for the psychometric properties of the AIM. En ligne : http://dx.doi.org/10.1007/s10803-018-3462-8 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=4267 Evaluating the Use of Exploratory Factor Analysis in Developmental Disability Psychological Research / Megan NORRIS in Journal of Autism and Developmental Disorders, 40-1 (January 2010)
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[article]
in Journal of Autism and Developmental Disorders > 40-1 (January 2010) . - p.8-20
Titre : Evaluating the Use of Exploratory Factor Analysis in Developmental Disability Psychological Research Type de document : texte imprimé Auteurs : Megan NORRIS, Auteur ; Luc LECAVALIER, Auteur Article en page(s) : p.8-20 Langues : Anglais (eng) Mots-clés : Exploratory-factor-analysis Review Methods Developmental-disability Pervasive-developmental-disorder Intellectual-disability Index. décimale : PER Périodiques Résumé : Exploratory factor analysis (EFA) is a widely used but poorly understood statistical procedure. This paper described EFA and its methodological variations. Then, key methodological variations were used to evaluate EFA usage over a 10-year period in five leading developmental disabilities journals. Sixty-six studies were located and evaluated on multiple procedural variations. Only 35% (n = 23) of studies used EFA; principal components analysis was the model used most often (n = 40, 61%). Orthogonal rotation was used most often (n = 39, 59%). A large portion of studies ran analyses with a subject: item ratio larger than 5:1 (n = 49, 74%). Most researchers employed multiple criteria for retaining factors (n = 45, 68%). Overall, results indicated that published recommendations and guidelines for the use of EFA are largely ignored. En ligne : http://dx.doi.org/10.1007/s10803-009-0816-2 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=9630 [article] Evaluating the Use of Exploratory Factor Analysis in Developmental Disability Psychological Research [texte imprimé] / Megan NORRIS, Auteur ; Luc LECAVALIER, Auteur . - p.8-20.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 40-1 (January 2010) . - p.8-20
Mots-clés : Exploratory-factor-analysis Review Methods Developmental-disability Pervasive-developmental-disorder Intellectual-disability Index. décimale : PER Périodiques Résumé : Exploratory factor analysis (EFA) is a widely used but poorly understood statistical procedure. This paper described EFA and its methodological variations. Then, key methodological variations were used to evaluate EFA usage over a 10-year period in five leading developmental disabilities journals. Sixty-six studies were located and evaluated on multiple procedural variations. Only 35% (n = 23) of studies used EFA; principal components analysis was the model used most often (n = 40, 61%). Orthogonal rotation was used most often (n = 39, 59%). A large portion of studies ran analyses with a subject: item ratio larger than 5:1 (n = 49, 74%). Most researchers employed multiple criteria for retaining factors (n = 45, 68%). Overall, results indicated that published recommendations and guidelines for the use of EFA are largely ignored. En ligne : http://dx.doi.org/10.1007/s10803-009-0816-2 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=9630 Psychometric characteristics of the aberrant behavior checklist in a well-defined sample of youth with autism Spectrum disorder / Megan NORRIS in Research in Autism Spectrum Disorders, 62 (June 2019)
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[article]
in Research in Autism Spectrum Disorders > 62 (June 2019) . - p.1-9
Titre : Psychometric characteristics of the aberrant behavior checklist in a well-defined sample of youth with autism Spectrum disorder Type de document : texte imprimé Auteurs : Megan NORRIS, Auteur ; Michael G. AMAN, Auteur ; Micah Osborne MAZUREK, Auteur ; Jessica F. SCHERR, Auteur ; Eric M. BUTTER, Auteur Article en page(s) : p.1-9 Langues : Anglais (eng) Mots-clés : Aberrant behavior checklist Autism spectrum disorder Factor analysis Validity Index. décimale : PER Périodiques Résumé : Background Behavior and emotional difficulties often occur in children and adolescents with Autism Spectrum Disorder (ASD), yet there are few instruments available to assess such problems in this population. The Aberrant Behavior Checklist (ABC), one option for this, is widely used and has substantial psychometric support. Despite this, only two studies to date have examined its structural validity in samples of individuals diagnosed exclusively with Autism Spectrum Disorder (ASD). This study sought to further examine the ABC’s validity for use with children and adolescents with ASD. Method Data from 470 individuals aged 2–14?years were submitted to confirmatory factor analysis (CFA). Correlations with other measures were examined. MANOVA was conducted to examine effects of subject characteristics on subscale scores of the ABC and assist in developing norms. Results Results supported the original factor structure of the ABC. Convergent and divergent validity analyses indicated correspondence with analogous measures and lack of relationship for dissimilar constructs. Results of normative analyses were very comparable to the only previously published norms for youth with ASD. Conclusions Overall, results provide further psychometric support for use of the ABC in individuals with ASD and better understanding the ABC’s clinical usefulness, particularly given the similarity between current and previous normative data. In a broader context, these results lend further support to the ABC as an instrument with wide applications. En ligne : https://doi.org/10.1016/j.rasd.2019.02.001 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=3890 [article] Psychometric characteristics of the aberrant behavior checklist in a well-defined sample of youth with autism Spectrum disorder [texte imprimé] / Megan NORRIS, Auteur ; Michael G. AMAN, Auteur ; Micah Osborne MAZUREK, Auteur ; Jessica F. SCHERR, Auteur ; Eric M. BUTTER, Auteur . - p.1-9.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 62 (June 2019) . - p.1-9
Mots-clés : Aberrant behavior checklist Autism spectrum disorder Factor analysis Validity Index. décimale : PER Périodiques Résumé : Background Behavior and emotional difficulties often occur in children and adolescents with Autism Spectrum Disorder (ASD), yet there are few instruments available to assess such problems in this population. The Aberrant Behavior Checklist (ABC), one option for this, is widely used and has substantial psychometric support. Despite this, only two studies to date have examined its structural validity in samples of individuals diagnosed exclusively with Autism Spectrum Disorder (ASD). This study sought to further examine the ABC’s validity for use with children and adolescents with ASD. Method Data from 470 individuals aged 2–14?years were submitted to confirmatory factor analysis (CFA). Correlations with other measures were examined. MANOVA was conducted to examine effects of subject characteristics on subscale scores of the ABC and assist in developing norms. Results Results supported the original factor structure of the ABC. Convergent and divergent validity analyses indicated correspondence with analogous measures and lack of relationship for dissimilar constructs. Results of normative analyses were very comparable to the only previously published norms for youth with ASD. Conclusions Overall, results provide further psychometric support for use of the ABC in individuals with ASD and better understanding the ABC’s clinical usefulness, particularly given the similarity between current and previous normative data. In a broader context, these results lend further support to the ABC as an instrument with wide applications. En ligne : https://doi.org/10.1016/j.rasd.2019.02.001 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=3890 Reliability and Validity of the Children’s Interview for Psychiatric Syndromes-Parent Version in Autism Spectrum Disorders / Andrea N. WITWER in Journal of Autism and Developmental Disorders, 42-9 (September 2012)
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[article]
in Journal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1949-1958
Titre : Reliability and Validity of the Children’s Interview for Psychiatric Syndromes-Parent Version in Autism Spectrum Disorders Type de document : texte imprimé Auteurs : Andrea N. WITWER, Auteur ; Luc LECAVALIER, Auteur ; Megan NORRIS, Auteur Année de publication : 2012 Article en page(s) : p.1949-1958 Langues : Anglais (eng) Catégories : AUTISME
ENFANT
ENTRETIEN D'EVALUATION
OUTIL D'EVALUATION
PSYCHIATRIEMots-clés : Structured interview Autism spectrum disorder Psychiatric disorder Validity Reliability Index. décimale : PER Périodiques Résumé : The Children’s Interview for Psychiatric Syndromes-Parent Version (P-ChIPS) is a structured psychiatric interview designed to assess the presence of psychiatric disorders in children and adolescents. This study examined the reliability and validity of the P-ChIPS in 61 youngsters (6- to 17-years-old) with Autism Spectrum Disorders. Reliability analyses were conducted according to level of functioning and language level. Results indicated that interrater reliability values were largely in the good to excellent range. Concordance between the P-ChIPS and the Child and Adolescent Symptoms Inventory was fair for the majority of disorders. Percent overall agreement for most disorders was good, lending support to the validity of the P-ChIPS. The results of this study suggest that the P-ChIPS is appropriate for this population. En ligne : http://dx.doi.org/10.1007/s10803-012-1442-y Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=1802 [article] Reliability and Validity of the Children’s Interview for Psychiatric Syndromes-Parent Version in Autism Spectrum Disorders [texte imprimé] / Andrea N. WITWER, Auteur ; Luc LECAVALIER, Auteur ; Megan NORRIS, Auteur . - 2012 . - p.1949-1958.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1949-1958
Catégories : AUTISME
ENFANT
ENTRETIEN D'EVALUATION
OUTIL D'EVALUATION
PSYCHIATRIEMots-clés : Structured interview Autism spectrum disorder Psychiatric disorder Validity Reliability Index. décimale : PER Périodiques Résumé : The Children’s Interview for Psychiatric Syndromes-Parent Version (P-ChIPS) is a structured psychiatric interview designed to assess the presence of psychiatric disorders in children and adolescents. This study examined the reliability and validity of the P-ChIPS in 61 youngsters (6- to 17-years-old) with Autism Spectrum Disorders. Reliability analyses were conducted according to level of functioning and language level. Results indicated that interrater reliability values were largely in the good to excellent range. Concordance between the P-ChIPS and the Child and Adolescent Symptoms Inventory was fair for the majority of disorders. Percent overall agreement for most disorders was good, lending support to the validity of the P-ChIPS. The results of this study suggest that the P-ChIPS is appropriate for this population. En ligne : http://dx.doi.org/10.1007/s10803-012-1442-y Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=1802 Screening Accuracy of Level 2 Autism Spectrum Disorder Rating Scales: A Review of Selected Instruments / Megan NORRIS in Autism, 14-4 (July 2010)
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[article]
in Autism > 14-4 (July 2010) . - p.263-284
Titre : Screening Accuracy of Level 2 Autism Spectrum Disorder Rating Scales: A Review of Selected Instruments Type de document : texte imprimé Auteurs : Megan NORRIS, Auteur ; Luc LECAVALIER, Auteur Article en page(s) : p.263-284 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The goal of this review was to examine the state of Level 2, caregiver-completed rating scales for the screening of Autism Spectrum Disorders (ASDs) in individuals above the age of three years. We focused on screening accuracy and paid particular attention to comparison groups. Inclusion criteria required that scales be developed post ICD-10, be ASD-specific, and have published evidence of diagnostic validity in peer-reviewed journals. The five scales reviewed were: the Social Communication Questionnaire (SCQ), Gilliam Autism Rating Scale/Gilliam Autism Rating Scale-Second Edition (GARS/GARS-2), Social Responsiveness Scale (SRS), Autism Spectrum Screening Questionnaire (ASSQ), and Asperger Syndrome Diagnostic Scale (ASDS). Twenty total studies were located, most examining the SCQ. Research on the other scales was limited. Comparisons between scales were few and available evidence of diagnostic validity is scarce for certain subpopulations (e.g., lower functioning individuals, PDDNOS). Overall, the SCQ performed well, the SRS and ASSQ showed promise, and the GARS/GARS-2 and ASDS demonstrated poor sensitivity. This review indicates that Level 2 ASD caregiver-completed rating scales are in need of much more scientific scrutiny. En ligne : http://dx.doi.org/10.1177/1362361309348071 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=1077 [article] Screening Accuracy of Level 2 Autism Spectrum Disorder Rating Scales: A Review of Selected Instruments [texte imprimé] / Megan NORRIS, Auteur ; Luc LECAVALIER, Auteur . - p.263-284.
Langues : Anglais (eng)
in Autism > 14-4 (July 2010) . - p.263-284
Index. décimale : PER Périodiques Résumé : The goal of this review was to examine the state of Level 2, caregiver-completed rating scales for the screening of Autism Spectrum Disorders (ASDs) in individuals above the age of three years. We focused on screening accuracy and paid particular attention to comparison groups. Inclusion criteria required that scales be developed post ICD-10, be ASD-specific, and have published evidence of diagnostic validity in peer-reviewed journals. The five scales reviewed were: the Social Communication Questionnaire (SCQ), Gilliam Autism Rating Scale/Gilliam Autism Rating Scale-Second Edition (GARS/GARS-2), Social Responsiveness Scale (SRS), Autism Spectrum Screening Questionnaire (ASSQ), and Asperger Syndrome Diagnostic Scale (ASDS). Twenty total studies were located, most examining the SCQ. Research on the other scales was limited. Comparisons between scales were few and available evidence of diagnostic validity is scarce for certain subpopulations (e.g., lower functioning individuals, PDDNOS). Overall, the SCQ performed well, the SRS and ASSQ showed promise, and the GARS/GARS-2 and ASDS demonstrated poor sensitivity. This review indicates that Level 2 ASD caregiver-completed rating scales are in need of much more scientific scrutiny. En ligne : http://dx.doi.org/10.1177/1362361309348071 Permalink : http://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=1077 The Autism Impact Measure (AIM): Examination of Sensitivity to Change / Micah O MAZUREK in Autism Research, 13-11 (November 2020)
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PermalinkThe Structure of Autism Symptoms as Measured by the Autism Diagnostic Observation Schedule / Megan NORRIS in Journal of Autism and Developmental Disorders, 42-6 (June 2012)
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