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ERIC Number: EJ915746
Record Type: Journal
Publication Date: 2011
Pages: 6
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-0891-4222
Psychometric Properties of the Disability Assessment Schedule (DAS) for Behavior Problems: An Independent Investigation
Tsakanikos, Elias; Underwood, Lisa; Sturmey, Peter; Bouras, Nick; McCarthy, Jane
Research in Developmental Disabilities: A Multidisciplinary Journal, v32 n2 p653-658 Mar-Apr 2011
The present study employed the Disability Assessment Schedule (DAS) to assess problem behaviors in a large sample of adults with ID (N = 568) and evaluate the psychometric properties of this instrument. Although the DAS problem behaviors were found to be internally consistent (Cronbach's [alpha] = 0.87), item analysis revealed one weak item ("Objectional habits") with item-total biserial correlation of only 0.20. An exploratory factor analysis revealed two main factors. The first factor consisted of items relating to "disruptive/distractive" problems. The second factor consisted of items relating to "antisocial/delinquent" problems. "Disruptive/distractive" problems were specifically associated with low ID level. "Antisocial/delinquent" behaviors were specifically associated with male gender, schizophrenia, hospital admission and troubles with police. For patients who had both "disruptive/distractive" problems and "antisocial/delinquent" behaviors, personality disorders and autism were more frequent, where as anxiety and depression were less frequent. On the basis of the obtained results, two new DAS subscales for assessing challenging behavior were proposed. Both subscales had good levels of internal consistency, as well as face and criterion validity. Overall, the new DAS subscales were shown to have acceptable psychometric properties and have therefore potential for use in both research and clinical practice. (Contains 1 figure and 4 tables.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A