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Title: Societal representations of dsm-iv-tr personality disorder criteria : an examination of dsm and dimensional assessment of personality pathology structures
Author: Brady, Sharon
ISNI:       0000 0004 2710 7297
Awarding Body: University of Ulster
Current Institution: Ulster University
Date of Award: 2011
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This research provides an examination of DSM personality disorder criteria using the DSM-IV-TR Axis II and Dimensional Assessment of Personality Pathology (DAPP) frameworks. Data. The British Psychiatric Morbidity of Adults Living in Private Households, 2000 (BPMS) survey, an epidemiological study covering England, Scotland and Wales (n=8580) was obtained from the UK Data Archives at the University of Essex. The personality disorder section of the interview was measured by self-report methods using the SCID-II (Structured Clinical Interview for DSM Axis II Disorders) screening questionnaire. Methods. The statistical software programme MplusTM version 5.21 was used to carry out statistical analyses. Item response theory (IRT) methods produced discriminatory and severity characteristics of the DSM personality disorder criteria. Confirmatory factor analysis (CFA) was utilized to examine the latent factors of the DSM personality disorders and clusters, and DAPP primary traits and domains. Hybrid modelling that combines CFA with latent class analysis techniques (LCFA) identified sub-populations within both the DSM and DAPP structures. Binomial logistic regression analyses of these sub-populations provided examination of group characteristics. Results. IRT item characteristic parameters indicated a number of DSM personality disorder are not performing well in terms of the underlying 11 disorders and domains. CFA indicated good model fit for the structures on inclusion of a number of extra specified relationships between some criteria. LCFA identified sub-populations that differ in terms of severity and likelihoods of criteria endorsements. Conclusions. IRT and LCFA both confirm that a number of criteria used for the assessment of personality disorder have poor discriminant validity, and these should be reviewed as indicators in new guidelines. Analyses at sub-population levels provide support for dimensional trait-type representations of personality disorder, and have provided useful profiles for hidden groups that have not been previously identified and should be of interest for clinicians, policy-makers and working groups for future editions of psychiatric guidelines.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available