''The New Personality Self -portrait'' is the only guide to personality types based on the American Psychiatric Association's just-published official diagnostic system -- the DSM -IV -- and written by one of today's leading personality researchers. A long-time backlist bestseller in its previous edition, it has now been completely updated to include all the fascinating new information about how we become who we are-and how we can change. The self-test in ''The New Personality Self -portrait'' is already used extensively in mental health and business settings. It reveals a profile so personal, so accurate, that it's as individual as a fingerprint. Readers discover their unique mix of 14 distinct personality styles -- and learn how those traits impact their relationships, work and home life. Fascinating case histories show each style in action, with tips on how to live and work with every type, and exercises for turning vulnerabilities into strengths -- plus warnings about when individual differences develop into personality disorders. ''You cannot read this book without attaining a deeper and clearer understanding of yourself and the people you care about.'' -- Herbert Pardes, M.D., Dean of the Faculty of Medicine, Columbia University College of Physicians and Surgeons. ''Brilliantly transforms a wealth of scientific information into an exciting and easy-to-follow format.'' -- Stuart C.Yudofsky, M.D., Professor and Chairman, Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine.