by A.M. Benis, ScD, MD. This landmark book brings together the essential elements of the NPA personality model. The premise is that every individual has several major personality traits resulting from just a few genes. The traits assort themselves in various combinations to give discrete “personality types” that anyone can learn to recognize. For those not familiar with the NPA model, there is ample introductory material. Included are the twenty original “Case studies” that illustrate how the personality traits are inherited from parents to offspring. The book concludes with a detailed chapter on the geographic distribution of the NPA traits throughout the world. There are two appendices: one that clarifies the parallel relationships between “narcissism” and “sadism”, and a second appendix that describes the online “NPA personality test” by which the reader can self-diagnose his or her genetic personality type. When printed: 123 pp., color illustr., charts, maps, glossary.