This report describes the psychometric properties of the six-item Brief Instrumental Functioning Scale (BIFS), a self-report questionnaire for measuring instrumental functioning in community populations, and the results of a study to validate the scale among homeless persons. The participants in the study were 1,509 homeless persons, of whom 1,077, or 71 percent, were seriously mentally ill, substance dependent, or both. Confirmatory factor analysis provided evidence for the unidimensionality of the items in the scale. The BIFS had high internal consistency, respectable stability, and reasonable convergent validity. The BIFS is useful for community populations when self-report data on functioning are required. Additional research is needed to develop and validate comparable scales for assessing other domains of functioning.
Reprinted with permission from Psychiatric Services, Vol. 52, No. 8, Aug. 2001, pp. 1097-1099. Copyright © 2001 American Psychiatric Association.
Originally published in: Psychiatric Services, Vol. 52, No. 8, Aug. 2001, pp. 1097-1099.
This report is part of the RAND Corporation Reprint series. The Reprint was a product of the RAND Corporation from 1992 to 2011 that represented previously published journal articles, book chapters, and reports with the permission of the publisher. RAND reprints were formally reviewed in accordance with the publisher's editorial policy and compliant with RAND's rigorous quality assurance standards for quality and objectivity. For select current RAND journal articles, see External Publications.
This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.
The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.