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Tsakanikos, Elias; Underwood, Lisa; Sturmey, Peter; Bouras, Nick; McCarthy, Jane – Research in Developmental Disabilities: A Multidisciplinary Journal, 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…
Descriptors: Measures (Individuals), Behavior Problems, Adults, Psychometrics
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You, Jianing; Leung, Freedom; Lai, Ching-man; Fu, Kei – Assessment, 2011
This study used item response theory (IRT) to examine the Impulsive Behaviors Checklist for Adolescents (IBCL-A) among 6,276 (67.7% girls) Chinese secondary school students. The IBCL-A included 15 maladaptive impulsive behaviors adapted from the Revised Diagnostic Interview for Borderlines. The authors obtained the severity and discrimination…
Descriptors: Check Lists, Test Bias, Construct Validity, Predictive Validity