Given their backgrounds in classical ethology and in comparative psychology, researchers who study animal personality in biology and psychology, respectively, differ in how they measure personality, what questions they see as important, and how they address these questions. Despite these differences, both comparative psychologists and biologists embrace personality traits. By doing so, they hav...

The investigation of personality genetics had received much attention since the three seminal reports showing an association between genes and personality traits in the general population. Accumulating evidences suggested that personality traits have significant genetic components. Although currently available data are not enough for proof, more and more genetic variants associated with persona...

BACKGROUND The impact of personality dysfunction on the outcome of treatment for depression remains debated. AIMS To examine the relationship between the number of prior depressive episodes, personality dysfunction and treatment response for depression. METHOD In a large sample (n = 8229) of adult out-patients with a major depressive episode (DSM-IV), personality dysfunction was assessed us...

Many personality assessment inventories provide gender-specific norms to allow comparison of an individual's standing relative to others of the same gender. In some cases, this means that an identical raw score produces standardized scores that differ notably depending on whether the respondent is male or female. Thus, an important question is whether unisex-normed scores or gender-normed score...

A number of authors have provided a useful evolutionary perspective on personality disorders, arguing that personality traits can be conceptualized in terms of evolutionary strategies. If we consider personality traits not as illnesses but as stable evolutionary strategies, the characteristic features of borderline personality disorder may respond to a behavioral pattern which, although deviati...

Judging others' personalities is an essential skill in successful social living, as personality is a key driver behind people's interactions, behaviors, and emotions. Although accurate personality judgments stem from social-cognitive skills, developments in machine learning show that computer models can also make valid judgments. This study compares the accuracy of human and computer-based pers...

Results: First, personality disorder is a form of mental disorder and, therefore, should be classified as a single diagnostic entity on Axis I along with other mental disorders. A preliminary definition of personality disorder as a tripartite failure involving the self system, kinship relationships, and societal relationships is proposed. The evidence suggests that this definition can be transl...

While considerable data support the relationship between childhood trauma and adult personality pathology in general, there is little research investigating the specific relationships between different types of childhood maltreatment and adult personality disorders. The present study tested a model incorporating five a priori hypotheses regarding the association between distinct forms of childh...

Personality variables have always predicted important behaviors and outcomes in industrial, work, and organizational psychology. In this commentary, we first review empirically supported structural models of personality that show the following: (a) Personality traits are hierarchically organized, (b) the Big Five are not orthogonal, (c) abnormal personality measures assess the same continuum of...