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      Psychometric Properties of the Strengths and Difficulties Questionnaire

      Journal of the American Academy of Child & Adolescent Psychiatry
      Ovid Technologies (Wolters Kluwer Health)

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          Abstract

          To describe the psychometric properties of the Strengths and Difficulties Questionnaire (SDQ), a brief measure of the prosocial behavior and psychopathology of 3-16-year-olds that can be completed by parents, teachers, or youths. A nationwide epidemiological sample of 10,438 British 5-15-year-olds obtained SDQs from 96% of parents, 70% of teachers, and 91% of 11-15-year-olds. Blind to the SDQ findings, all subjects were also assigned DSM-IVdiagnoses based on a clinical review of detailed interview measures. The predicted five-factor structure (emotional, conduct, hyperactivity-inattention, peer, prosocial) was confirmed. Internalizing and externalizing scales were relatively "uncontaminated" by one another. Reliability was generally satisfactory, whether judged by internal consistency (mean Cronbach a: .73), cross-informant correlation (mean: 0.34), or retest stability after 4 to 6 months (mean: 0.62). SDQ scores above the 90th percentile predicted a substantially raised probability of independently diagnosed psychiatric disorders (mean odds ratio: 15.7 for parent scales, 15.2 for teacher scales, 6.2 for youth scales). The reliability and validity of the SDQ make it a useful brief measure of the adjustment and psychopathology of children and adolescents.

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          Author and article information

          Journal
          Journal of the American Academy of Child & Adolescent Psychiatry
          Journal of the American Academy of Child & Adolescent Psychiatry
          Ovid Technologies (Wolters Kluwer Health)
          08908567
          November 2001
          November 2001
          : 40
          : 11
          : 1337-1345
          Article
          10.1097/00004583-200111000-00015
          694ac73d-b475-4e25-a44e-ec3ceb810a7f
          © 2001

          https://www.elsevier.com/tdm/userlicense/1.0/

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