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Psychol Med. 2007 Jul;37(7):983-94. Epub 2006 Nov 23.

Comparison of alternative models for personality disorders.

Author information

1
Psychology Department, Texas A&M University, College Station, TX 77843-4235, USA. lcm@psyc.tamu.edu

Abstract

BACKGROUND:

The categorical classification system for personality disorder (PD) has been frequently criticized and several alternative dimensional models have been proposed.

METHOD:

Antecedent, concurrent and predictive markers of construct validity were examined for three models of PDs: the Five-Factor Model (FFM), the Schedule for Nonadaptive and Adaptive Personality (SNAP) model and the DSM-IV in the Collaborative Study of Personality Disorders (CLPS) sample.

RESULTS:

All models showed substantial validity across a variety of marker variables over time. Dimensional models (including dimensionalized DSM-IV) consistently outperformed the conventional categorical diagnosis in predicting external variables, such as subsequent suicidal gestures and hospitalizations. FFM facets failed to improve upon the validity of higher-order factors upon cross-validation. Data demonstrated the importance of both stable trait and dynamic psychopathological influences in predicting external criteria over time.

CONCLUSIONS:

The results support a dimensional representation of PDs that assesses both stable traits and dynamic processes.

PMID:
17121690
DOI:
10.1017/S0033291706009482
[Indexed for MEDLINE]

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