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Researchers have suggested that personality disorders (PDs) could be better understood with a dimensional model than with the DSM-IIII-R categorical system. The authors conceptualized PDs as extreme expressions of personality functioning. Dimensional measures of aspects of PD were developed for the present study on the basis of previous factor-analytic investigations. The authors examined the convergence of these measures with Costa and McCrae's «Big Five» factors in a sample of 300 general-population subjects
Schroeder et al. (Sun,) studied this question.