title: Development and validation of a modified version of the Peritraumatic Dissociative Experiences Questionnaire.
abstract: This article reports results from 3 studies conducted to develop and validate a modified version of the self-administered form of the Peritraumatic Dissociative Experiences Questionnaire (PDEQ; C. R. Marmar, D. S. Weiss, & T. J. Metzler, 1997). The objective was to develop an instrument suitable for use with persons from diverse ethnic and socioeconomic backgrounds. In Study 1, the original PDEQ was administered to a small sample (N = 15) recruited from among men admitted to the hospital for physical injuries stemming from exposure to community violence. Results led to modifications aimed at improving the utility of the instrument. In Study 2, the modified PDEQ was subjected to structural equation modeling and item response theory analyses to assess its psychometric properties in a larger, primarily male, sample of community violence survivors (N = 284). In Study 3, the reliability and validity of the modified instrument were further assessed in a sample of female survivors of sexual assault (N = 90). Results attest to the psychometric properties as well as the reliability and validity of the modified 8-item PDEQ.
authors.affiliation: RAND Criminal Justice Program, Santa Monica, California, USA. grant_marshall@rand.org
authors.forename: Grant N
authors.initials: GN
authors.lastname: Marshall
authors.forename: Maria
authors.initials: M
authors.lastname: Orlando
authors.forename: Lisa H
authors.initials: LH
authors.lastname: Jaycox
authors.forename: David W
authors.initials: DW
authors.lastname: Foy
authors.forename: Howard
authors.initials: H
authors.lastname: Belzberg
mesh_terms: D000293:Adolescent; D000328:Adult; D019973:Alcohol-Related Disorders / Q000523:psychology; D004213:Dissociative Disorders / Q000175:diagnosis* / Q000523:psychology*; D005260:Female; D006801:Humans; D015601:Injury Severity Score; D007407:Interviews as Topic; D008297:Male; D010865:Pilot Projects; D011594:Psychometrics; D015203:Reproducibility of Results; D012111:Residence Characteristics; D012742:Sex Offenses / Q000523:psychology; D012944:Social Support; D012959:Socioeconomic Factors; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000523:psychology*; D011795:Surveys and Questionnaires; D014754:Violence / Q000523:psychology*