ArticlesDefense Mechanisms and Personality DisordersLINGIARDI, VITTORIO M.D.1,3; LONATI, CLIZIA M.D.2,3; DELUCCHI, FRANCESCA M.D.2,3; FOSSATI, ANDREA M.D.2,3; VANZULLI, LAURA M.D.2,3; MAFFEI, CESARE M.D.2,3Author Information 1 Department of Psychology, Faculty of Psychology, University of Rome "La Sapienza", via dei Marsi 78, Rome, Italy. Send reprint requests to Prof. Lingiardi at via San Vito, 26, 20123 Milan, Italy. 2 Istituto Scientifico Ospedale San Raffaele, Department of Neuropsychiatric Sciences, University of Milan School of Medicine, via Luigi Prinetti 29, 20127 Milan, Italy. 3 Associazione Italiana per lo Studio dei Disturbi di Personalità (AISDP), affiliated to the International Society for the Study of Personality Disorders (ISSPD) via Luigi Prinetti 29, 20127 Milan, Italy. The Journal of Nervous & Mental Disease: April 1999 - Volume 187 - Issue 4 - p 224-228 Buy Abstract The evaluation of defense mechanisms represents one of the most promising fields in the psychodynamic-oriented empirical research on personality disorders (PDs). This study examines the association between DSM-IV PDs and defense mechanisms. We evaluated a sample of 50 adult outpatients seeking personality assessment and psychotherapeutic treatment. PDs have been assessed using the Structured Clinical Interview for DSM-IV Personality Disorder, version 2.0. Defense mechanisms have been evaluated by a group of trained clinical psychologists and psychiatrists (interrater reliability from .61 to .95) using Perry's Defense Mechanism Rating Scale. Our results support the hypothesis that some defense mechanisms underlie PDs and that defenses call for further attention as we assess PDs. © 1999 Lippincott Williams & Wilkins, Inc.