A New Symptom Model for Autism Cross-Validated in an Independent Sample

Autor/inn/en	Boomsma, A.; Van Lang, N. D. J.; De Jonge, M. V.; De Bildt, A. A.; Van Engeland, H.; Minderaa, R. B.
Titel	A New Symptom Model for Autism Cross-Validated in an Independent Sample
Quelle	In: Journal of Child Psychology and Psychiatry, 49 (2008) 8, S.809-816 (8 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9630
DOI	10.1111/j.1469-7610.2008.01897.x
Schlagwörter	Models; Adolescents; Symptoms (Individual Disorders); Test Validity; Severity (of Disability); Intelligence; Age Differences; Children; Pervasive Developmental Disorders; Goodness of Fit + Suchen Sie Ihr Suchwort? Analogiemodell; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Psychiatrische Symptomatik; Testvalidität; Schweregrad; Intelligenz; Klugheit; Age; Difference; Age difference; Altersunterschied; Child; Kind; Kinder
Abstract	Background: Results from several studies indicated that a symptom model other than the DSM triad might better describe symptom domains of autism. The present study focused on a) investigating the stability of a new symptom model for autism by cross-validating it in an independent sample and b) examining the invariance of the model regarding three covariates: symptom severity, intelligence, and age. Method: The validity of the symptom model was examined in an independent sample of N = 263 children and adolescents with autism spectrum disorders, and model invariance was studied in a larger sample of N = 356 children and adolescents with autism spectrum disorders. The fit of the symptom model to the sample data was compared to that of alternative models (including the DSM triad), and the invariance of the new model was investigated for each covariate by multiple-group comparisons. Results: The fit of the new symptom model was better than that of two alternative models. It could not be compared to that of the DSM triad, because the latter encountered empirical identification problems. There were no significant or substantive differences between the estimated model in each of the dichotomised groups for any of the three covariates, which indicated factorial invariance of both structural form and factor loadings. Conclusions: The symptom model appeared to be relatively stable: It could be cross-validated in the independent sample and factorial invariance was shown between the dichotomised groups for each covariate. Further model validation with instruments other than the Autism Diagnostic Interview-Revised (ADI-R) is recommended. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10