title: A self-report measure for the ICD-11 dimensional trait model proposal: The personality inventory for ICD-11.
abstract: Proposed for the 11th edition of the World Health Organization's International Classification of Diseases (ICD-11) is a dimensional trait model for the classification of personality disorder (Tyrer, Reed, & Crawford, 2015). The ICD-11 proposal consists of 5 broad domains: negative affective, detachment, dissocial, disinhibition, and anankastic (Mulder, Horwood, Tyrer, Carter, & Joyce, 2016). Several field trials have examined this proposal, yet none has included a direct measure of the trait model. The purpose of the current study was to develop and provide initial validation for the Personality Inventory for ICD-11 (PiCD), a self-report measure of this proposed 5-domain maladaptive trait model. Item selection and scale construction proceeded through 3 initial data collections assessing potential item performance. Two subsequent studies were conducted for scale validation. In Study 1, the PiCD was evaluated in a sample of 259 MTurk participants (who were or had been receiving mental health treatment) with respect to 2 measures of general personality structure: The Eysenck Personality Questionnaire-Revised and the 5-Dimensional Personality Test. In Study 2, the PiCD was evaluated in an additional sample of 285 participants with respect to 2 measures of maladaptive personality traits: The Personality Inventory for DSM-5 and the Computerized Adaptive Test for Personality Disorders. Study 3 provides an item-level exploratory structural equation model with the combined samples from Studies 1 and 2. The results are discussed with respect to the validity of the measure and the potential benefits for future research in having a direct, self-report measure of the ICD-11 trait proposal. (PsycINFO Database Record
authors.affiliation: Department of Psychology.
authors.forename: Joshua R
authors.identifier: 0000-0001-6670-6995
authors.initials: JR
authors.lastname: Oltmanns
authors.affiliation: Department of Psychology.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Widiger
mesh_terms: D000328:Adult; D003625:Data Collection; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D038801:International Classification of Diseases; D008297:Male; D008875:Middle Aged; D010551:Personality; D010554:Personality Disorders / Q000523:psychology*; D010555:Personality Inventory; D011613:Psychotherapy; D015203:Reproducibility of Results; D057566:Self Report; D014944:World Health Organization; D055815:Young Adult