Assumptions for analyzing treatment means in repeated measures designs are noted. The traditional F test has been shown to have limitations, given violations of the assumption of sphericity. This assumption is probably infrequently satisfied in clinical applications. Analytic alternatives based on a three-step Geisser-Greenhouse approach are discussed.
This report describes differences in motoric and instrumental activity of daily living skills (MADLs and IADLs) between 1,442 people with autism and 24,048 people with mental retardation, using data from an adaptive behavior measure. Comparisons were made using groups defined by age (5-12, 13-21, and 21-35 years) and intellectual level. Diagnoses of record were confirmed through group analyses of rates of problem behaviors consistent with autism and comparison to an independent data base. Findings suggest that at ages 5-12 the skills of children with autism are more developed than those of children with mental retardation matched by age and intellectual level. However, in the older groups these differences diminish, and with increasing age (21-35 years) more developed instrumental skills are observed for people with mental retardation.
Six méthodes de mesure de l'importance des attributs ont été évaluées du point de vue de la validité convergente. Ces méthodes sont: 1) Une approche déclarative directe; 2) Une approche par la recherche d'information fondée sur la méthode du processus comportemental de Jacoby; 3) La notation directe de l'importance; 4) La méthode des mesures conjointes; 3) Des indices basés sur l'approche de la probabilité subjective de Jaccard; et 6) Une approche de comparaisons par paires. La validité convergente des méthodes de mesure d'importance a été étudiée pour deux catégories de produits: les contraceptifs et les voitures. Les résultats ont montré des niveaux plutôt bas de convergence des mesures.
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