David Benavidez

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Studies evaluating behavioral treatment of autism from 1980 to the present were reviewed. Studies included were published in journal articles and utilized behavioral methodology. A total of 251 studies were included in the review. Each study was analyzed for target behaviors and behavioral techniques implemented. Target behaviors were divided into(More)
A cluster analytic study was conducted to empirically derive behaviorally homogeneous subtypes of pervasive developmental disorders (PDD). Subjects were clustered based on a broad range of behavioral symptoms which characterize autism. Behavioral variables were measured using several of the standardized psychometric instruments most commonly employed in(More)
The performance of 25 mentally retarded and 25 normal IQ adolescents was investigated on self-report and informant versions of three childhood depression measures. These measures included the Children's Depression Inventory, the Bellevue Index of Depression, and the Reynolds Child Depression Scale. Adolescents with mild to severe levels of mental(More)
Osteosarcomas are primary bone tumors of osteoblastic origin that mostly affect adolescent patients. These tumors are highly aggressive and metastatic. Previous reports indicate that gain of function of a key osteoblastic differentiation factor, Runx2, leads to growth inhibition in osteosarcoma. We have previously established that Runx2 transcriptionally(More)
Teachers completed the Connors' Teacher Rating Scale (CTRS-39) on 100 boys assigned to one of four groups based on an IQ screen and scores on a DSM-III-R checklist of the symptoms for Attention Deficit-Hyperactivity Disorder (AD-HD). The groups included children rated high on AD-HD, mentally retarded children, mentally retarded children rated high on AD-HD,(More)
The independence of hyperactivity, attention deficits, and conduct problems among mentally retarded children was addressed using factors of the Conners' Teacher Rating Scale-39 (CTRS-39) and the more recently developed IOWA Conners' inattention/overactivity (IO) and aggression (A) subscales. CTRS-39 ratings were obtained for children of normal intelligence(More)
Questionnaires on age appropriateness were completed by 100 mental health professionals from 10 states. In general, the respondents were familiar with the concept and had learned about age appropriateness from a variety of sources. Age appropriateness was defined in terms of chronological age rather than mental age or the two concepts combined. Respondents(More)
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