The authors of the textbook are trying to fill the gap that exists in the methodological training of undergraduates in the specialty "Organizational Psychology". Despite the fact that interest in the methodology of this area of social psychology is growing, there is still no corresponding textbook for this academic discipline.The textbook is recommended for students and graduate students, as well as researchers and teachers of socially oriented branches of psychology and methodology of scientific knowledge.The publisher's layout has been saved in a4.pdf format.