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Constructs Assessed by the GARS-2: Factor Analysis of Data from the Standardization Sample / Vincent PANDOLFI in Journal of Autism and Developmental Disorders, 40-9 (September 2010)
[article]
Titre : Constructs Assessed by the GARS-2: Factor Analysis of Data from the Standardization Sample Type de document : Texte imprimé et/ou numérique Auteurs : Vincent PANDOLFI, Auteur ; Caroline I. MAGYAR, Auteur ; Charles A. DILL, Auteur Année de publication : 2010 Article en page(s) : p.1118-1130 Langues : Anglais (eng) Mots-clés : GARS-2 Autism Autism-spectrum-disorder Autism-screening Factor-analysis Index. décimale : PER Périodiques Résumé : The GARS-2 (Gilliam 2006) is widely used for autism screening; however, the validity of its three conceptually-derived subscales has not been evaluated. In this study, exploratory (EFA) and confirmatory (CFA) factor analyses of data from matched subgroups of the standardization sample did not support the GARS-2 subscale structure. EFAs identified four factors in the model development subgroup (n = 496): stereotyped/repetitive behavior, stereotyped/idiosyncratic language, word use problems, and social impairment. CFAs supported this model in the replication subgroup (n = 494). Findings suggest that the GARS-2 subscales have limited clinical utility and that the Autism Index should be interpreted with caution. Although more research is needed, the clinical utility of the four empirically-derived scales may be limited by factors related to item content and test development procedures. En ligne : http://dx.doi.org/10.1007/s10803-010-0967-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=108
in Journal of Autism and Developmental Disorders > 40-9 (September 2010) . - p.1118-1130[article] Constructs Assessed by the GARS-2: Factor Analysis of Data from the Standardization Sample [Texte imprimé et/ou numérique] / Vincent PANDOLFI, Auteur ; Caroline I. MAGYAR, Auteur ; Charles A. DILL, Auteur . - 2010 . - p.1118-1130.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 40-9 (September 2010) . - p.1118-1130
Mots-clés : GARS-2 Autism Autism-spectrum-disorder Autism-screening Factor-analysis Index. décimale : PER Périodiques Résumé : The GARS-2 (Gilliam 2006) is widely used for autism screening; however, the validity of its three conceptually-derived subscales has not been evaluated. In this study, exploratory (EFA) and confirmatory (CFA) factor analyses of data from matched subgroups of the standardization sample did not support the GARS-2 subscale structure. EFAs identified four factors in the model development subgroup (n = 496): stereotyped/repetitive behavior, stereotyped/idiosyncratic language, word use problems, and social impairment. CFAs supported this model in the replication subgroup (n = 494). Findings suggest that the GARS-2 subscales have limited clinical utility and that the Autism Index should be interpreted with caution. Although more research is needed, the clinical utility of the four empirically-derived scales may be limited by factors related to item content and test development procedures. En ligne : http://dx.doi.org/10.1007/s10803-010-0967-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=108