Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Evaluation of Professional Suitability of Subjects Based on the Results of Physiological Effects on the Body S.V. MIKONI, B.V. SOKOLOV, S.P. LYASHEDKO The problem of assessing the professional suitability of a group of subjects based on the results of physiological effects on the body is solved. Before and after each of the three types of effects on the subjects, their physiological indicators are measured. Based on their values, it is necessary to determine the degree of suitability of the subjects for performing a certain type of work. To solve this problem, a model of deviation from the norm is used. It is represented by membership functions for three classes - Norm, Less than Norm and More than Norm on the scale of each assessed indicator. The scale of the indicator is formed based on expert assessments of the boundaries of the norm, permissible and maximum deviations from the norm. Maximum deviations in both directions from the norm are taken as the boundaries of the scale of the indicator. The values of permissible deviations from the norm are used to construct fuzzy membership functions for classes. Their fronts are modeled by logistic functions. The class assigned to the subject is selected based on the maximum value of the membership function generalized by the assessed indicators. Rules for selecting a class for different ratios of membership function values are given. The classification, processing and presentation of the results are performed on the instrumental system of selection and ranking SVIR-M. Various forms of presentation of information are given, convenient for substantiating the obtained results and diagnosing the condition of the subjects. Keywords: test, physiological state, norm, deviation from the norm, classification, membership function, SVIR-M system. DOI: 10.25791/pribor.3.2025.1562 Pp. 10-19.