Journal
PSYCHIATRY RESEARCH
Volume 208, Issue 1, Pages 33-40Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.psychres.2013.03.007
Keywords
Discrimination and Stigma Scale (DISC); Psychometric validation; Scale development; Stigma; Mental illness
Categories
Funding
- National Institute for Health Research (NIHR) [RP-PG-0606-1053]
- NIHR Specialist Mental Health Biomedical Research Centre at the Institute of Psychiatry, King's College London
- South London and Maudsley NHS Foundation Trust
- Medical Research Council [G0601660] Funding Source: researchfish
- National Institute for Health Research [RP-PG-0606-1053, NF-SI-0611-10053] Funding Source: researchfish
- MRC [G0601660] Funding Source: UKRI
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Mental illness is associated with unfair treatment in a number of areas of life. There is currently no psychometrically validated measure that has been developed to specifically focus on such experienced discrimination. This study aimed to finalise the Discrimination and Stigma Scale (DISC) and establish its psychometric properties. The DISC was further developed using (1) service user and interviewer focus groups; (2) reading ease testing; and (3) cognitive debriefing interviews. The revised scale then underwent psychometric testing to establish the following properties: reliability; validity; precision; acceptability; and feasibility. The final 22-item DISC demonstrated good psychometric properties (n=86) including inter-rater reliability (weighted kappa range: 0.62-0.95), internal consistency (alpha=0.78) and test-retest reliability (n=46) (weighted kappa range: 0.56-0.89). Feasibility, validity and acceptability were also established. In conclusion, the 22-item DISC is recommended for use in measuring experienced stigma and discrimination. Additional work to develop a measure of anticipated stigma is recommended. Crown Copyright (C) 2013 Published by Elsevier Ireland Ltd. All rights reserved.
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