This reference book is devoted to one of the main types of work of a practical psychologist - psychological diagnostics. The materials collected by the author-compilers will give the reader the opportunity to imagine the current state of the problems of psychodiagnostics, understand its essence, and the specifics of its use in different conditions. Separately, issues of psychodiagnostic work of a practical psychologist in the educational system are considered, as well as problems of using computer technologies in modern psychodiagnostics. The materials in the reference book can help both the teacher - organize and conduct training sessions on this academic subject, and the student - prepare for classes and successfully pass the test or exam. In addition, the book will be useful to practical psychologists, as well as other specialists who use psychodiagnostic methods in their work.