How do people and professions fit together? What are the most important prerequisites for professional success? Why is intelligence so significant? How do you measure performance motivation, self-confidence, social skills, and other key traits? What should be thought of personality tests in employee selection? Are interest tests only useful for career counseling or also for personnel selection? What determines whether an assessment center fulfills its purpose or is just a waste of time? How can one distinguish good methods from bad ones, and which good ones should be combined? These and many other questions are answered in this volume. The book provides information on the fundamentals and the most important procedures, as well as their quality, benefits, fairness, and legality of their use. Important technical terms are explained in a comprehensive glossary.