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Instrument to assess depersonalization‐derealization in panic disorder
Author(s) -
Cox Brian J.,
Swinson Richard P.
Publication year - 2002
Publication title -
depression and anxiety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.634
H-Index - 129
eISSN - 1520-6394
pISSN - 1091-4269
DOI - 10.1002/da.10051
Subject(s) - derealization , depersonalization , panic disorder , anxiety , psychology , clinical psychology , panic , anxiety disorder , reliability (semiconductor) , psychometrics , psychiatry , burnout , emotional exhaustion , power (physics) , physics , quantum mechanics
There is a long history of scholarly interest on depersonalization‐derealization (DD) and its role in clinical anxiety, but there is a paucity of appropriate assessment instruments available. Our objective was to develop and evaluate a self‐report measure of DD for use with clinically anxious patients. Panic disorder patients ( n =169) were surveyed about DD experiences and provided data on a new item pool for psychometric development. DD episodes were common and a 28‐item Depersonalization‐Derealization Inventory was found to possess good reliability and validity. DD appears to be prevalent and clinically relevant in panic disorder. Continued study of DD is warranted and may be facilitated by the availability of a suitable instrument with promising psychometric properties. A 12‐item version of the instrument may be appropriate as a brief screen. © 2002 Wiley‐Liss, Inc.