OBJECTIVE To examine whether personality traits have predictive validity for trichotillomania (TTM) diagnosis, pulling severity and control, and hair pulling style. METHODS In study 1, logistic regression was used with TTM cases (n=54) and controls (n=25) to determine if NEO Five-Factor Inventory (NEO-FFI) personality domains predicted TTM case vs. control classification. In study 2, hierarch...

Forty-three trait-descriptive adjectives with representative items from the human Big-Five model were used to assess the factor structure of personality in 100 zoo chimpanzees. Interrater reliabilities were acceptably high, with an overall η of .75 and those of individual adjectives ranging from .55 to .81. Analysis of variance showed no significant interaction between zoos and individual trait...

The five-factor model has been widely used to describe adaptive and maladaptive functioning in adulthood. However, less is known about the structure and developmental antecedents of personality pathology and personality disorders. In the present study, we examined the validity of the most recent DSM-IV predictions (Widiger, Trull, Clarkin, Sanderson, & Costa, 2002) in a sample of 419 non-clinic...

BACKGROUND Personality traits may form a part of the aetiology of opioid dependence. For instance, opioid dependence may result from self-medication in emotionally unstable individuals, or from experimenting with drugs in sensation seekers. The five factor model (FFM) has obtained a central position in contemporary personality trait theory. The five factors are: Neuroticism, Extraversion, Openn...

The purpose of this study was to investigate convergent and discriminant validity of the five-factor model of adolescent personality in a school setting using three different raters (methods): self-ratings, peer ratings, and teacher ratings. The authors investigated validity through a multitrait-multimethod matrix and a confirmatory factor analysis correlated trait, uncorrelated method model. W...

It is evident that the conceptualization, diagnosis, and classification of personality disorder (PD) is shifting toward a dimensional model. The purpose of this special issue of Journal of Personality is to indicate how the Five-Factor Model (FFM) can provide a useful and meaningful basis for an integration of the description and classification of both normal and abnormal personality functionin...

Studies of the five-factor model of personality in schizotypal personality disorder (SPD) have produced inconsistent results, particularly with respect to openness. In the present study, the NEO-FFI was used to measure five-factor personality dimensions in 28 community volunteers with SPD and 24 psychiatrically healthy individuals. Standard multivariate statistical analyses were used to evaluat...