Discriminant Validity of the Vineland Scales: Score Profiles of Individuals With Mental Retardation and a Specific Disorder

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Abstract
Utility of the Vineland Adaptive Behavior Scales-Expanded Form to discriminate among areas of adaptive behavior was substantiated by comparing profiles of scores obtained by three groups of individuals with mental retardation and either a communication, social behavior, or motor abilities disorder with those of matched individuals with mental retardation but no other disorder. Individuals with social behavior disorders obtained lower scores only in the Socialization domain; those with motor disorders, in the Motor domain and in the Personal and Domestic subscales that require motor competencies; and those with communication disorders, lower scores in the Communication domain and in the Community and Interpersonal Relationships subscales requiring expressive competencies. The utility of the Vineland Scales in obtaining an ecological evaluation of individuals with mental retardation is discussed.