Identifier

etd-08202007-204147

Degree

Doctor of Philosophy (PhD)

Department

Psychology

Document Type

Dissertation

Abstract

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.

Date

2007

Document Availability at the Time of Submission

Release the entire work immediately for access worldwide.

Committee Chair

Johnny L. Matson

Included in

Psychology Commons

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