2 ABSTRACT In the Alternative DSM-5 Model for Personality Disorders (AMPD), the diagnosis of specific personality disorders is obtained through an evaluation of the level of impairment in personality functioning and an assessment of dimensional personality traits associated in 25 "lower order" facets and 5 "higher order" domains. The Personality Inventory for DSM-5 (PID-5) was developed for examination of personality traits within this system. This Ph.D. thesis covers five relevant publications regarding AMPD, particularly PID-5. First, the authors introduce the theoretical background of the PID-5. Attention is paid on its ease of use, data interpretation and use of these data for treatment planning in different clinical settings. Two empirical studies test PID-5 psychometric properties (internal consistency, validity, discrimination capacity and unidimensional structure) in the sample of community volunteers (n=351) and a clinical sample of psychiatric patients (n=143). PID-5 was administered individually and in a group setting using pen-paper method and online data collection. 33 respondents completed the inventory twice to check test-retest reliability. Authors presumed, evidence will be found to support internal consistency and convergent validity of the PID-5 personality trait domains, as well as their...

<p>In addition to replicating examinations of gender bias in the diagnosis of all cluster B personality disorders (PDs), this is the first study to examine the extent to which patient sexual orientation biases the diagnosis of antisocial, histrionic, and narcissistic PDs as well as whether or not such sexual orientation bias differs by patient gender. Furthermore, this study is the first to examine how such gender and sexual orientation biases are moderated by (1) the model of personality pathology used (i.e., traditional DSM vs. dimensional Alternate Model of Personality Disorders [AMPD]) and (2) measurement specificity (i.e., global PD measurement vs. symptom-level measurement). To undertake these examinations, it utilized a vignette describing a patient whose gender identification (man or woman) and sexual orientation (heterosexual or gay/lesbian) were experimentally manipulated. Clinicians (<em>N</em>=435) were randomly assigned to examine one of the resultant four vignettes, after which they each completed three measures of personality pathology. Though there was evidence of gender bias, such bias was twice-to-four times as weak as gender bias found in past similar studies. There was no evidence of significant diagnostic bias based on patient sexual orientation and sexual orientation bias did not differ by patient gender. Broadly, neither gender nor sexual orientation bias was moderated by the model of personality pathology underlying the measures used, by the specificity with which the pathology was measured, or by clinician characteristics (i.e., age, gender, sexual orientation, licensure status, race). Results suggest a decrease in gender and sexual orientation bias within experimental contexts relative to that which was found by prior studies. Further examinations should elucidate the mechanisms moderating diagnostic bias. </p>