It is worth your money to purchase the latest edition (this one) than picking up a used first edition. Very impressive array of universal tools and references for the psychology student, school counselor, chemical dependency counselor, psychologist and psychiatrist alike. Like a Cliff Notes on the practice on psychology. Particularly useful is the "Compendium of Psychotherapy Treatment Manuals" including orientation, modality, and specific strengths. Charts, outlines, samples, generalized explanations and so on. Highly recommended having this handy. Believe it or not, a wonderful skim-read too to pique interest in specifics you may have not pondered for awhile. If you find similar valuable psych books, please drop me an email. ( )