The monograph is a bestseller by prominent American researchers L. Kjell and D. Ziegler and is addressed to everyone for whom the knowledge and practical application of psychology is necessary in their professional activities. Reading it will be useful for psychologists and doctors, teachers and students, as well as a wide range of readers interested in issues of modern personality psychology, interpersonal and family relationships. The book covers a wide range of areas in personality theory, developed by such major scientists as Freud, Adler, Jung, Erikson, Fromm, Horney, Cattell, Eysenck, Skinner, Bandura, Rotter, Kelly, Maslow, Rogers. Most of these theories are presented in such full form in Russian for the first time.