The textbook, written in accordance with the requirements of the Federal State Educational Standard, examines the psychological features of the theory and practice of psychological experiment. The main characteristics of the experiment, the psychological foundations of the experimental process, the features of the psychological and ethical culture of the experimenter, the principles of organizing the interaction of the experimenter and the subject, the psychological features of the planning of the experiment are disclosed. This publication is distinguished from other books of this kind by a number of features related to the organization and presentation of material, which makes it easier for students to master this discipline. All material is presented in the form of conveniently readable diagrams and tables, accompanied by comments.