Title page for ETD etd-08202007-204147

Type of Document Dissertation
Author Cooper, Christopher
Author's Email Address ccoop11@lsu.edu
URN etd-08202007-204147
Title The Depression Scale for Severe Disability: A Diagnostic Tool for the Assessment of Depression in Adults with Severe and Profound Intellectual Disabilities
Degree Doctor of Philosophy (Ph.D.)
Department Psychology
Advisory Committee
Advisor Name Title
Johnny L. Matson Committee Chair
Alan Baumeister Committee Member
Amy Copeland Committee Member
William D. Gouvier Committee Member
Janna B. Oetting Dean's Representative
  • psychopathology
  • mental retardation
  • psychometrics
  • mood disorders
Date of Defense 2006-09-22
Availability unrestricted
The Depression Scale for Severe Disability(DEPRESSED) is a clinically and empirically derived informant-report behavioral rating scale designed to measure depression in persons with severe and profound intellectual disabilities by assessing behavioral symptoms of depression. Behavioral symptoms of depression and item and factor analyses were used to construct the scale resulting in a 20-item four-factor solution producing factors that were labeled "Sleep"(F1), "Mood"(F2), "Skills"(F3), and "Motor"(F4). The DEPRESSED identified the core symptoms of depression including mood, anhedonia, sleep, appetite, fatigue, and psychomotor agitation and retardation. Internal consistency, interrater and test-retest reliability of the DEPRESSED scale were excellent. The DEPRESSED also demonstrated face and factorial validity and excellent construct and convergent validity with the DASH-II. Based on a preliminary psychometric evaluation, the DEPRESSED appears to be a reliable and valid measure for screening depression in individuals with severe and profound intellectual disabilities.
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