Risk Evaluation of Loss in Professional Efficiency, Health, and Work Safety Using Psychophysiological Factors

A transformation in modern production and an increase in workload requires an improvement in the occupational psychophysiological selection, the search for new approaches for its implementation, and the creation of special ways for the evaluation of the psychophysiological state of workers. The aim of this investigation is to develop an approach for the quantitative evaluation of the efficient reduction in risk in worker’s occupational activity, and the probability of health and safety depletion during the entire life period of work. Materials and Methods: The investigation is based on the data of 110 psychophysiological indicators, received from a survey that encompassed the workers of operative service in electric power engineering industry of Ukraine. The data was examined using statistical tools, factor analysis, and multivariate regression models. Results: The developed technique made it possible to determine the statistical significance and to estimate the impact of the important phychophysiological factors on the level of success in the occupational activity of workers under dangerous circumstances. The model includes the variable that describes the age of the worker and provides analysis for 4 categories of ages. Conclusion: The important factors that influence the risk of reduction in occupational efficiency of the workers are variability, the total error, and the number of positive values according to the pendulum methodology; the average reaction time according to the square-circle technique; variability according to the square technique; and adaptability and time of the task performance according to the adaptability methodology. The workers belonging to the same age group do not significantly change the risk of depletion in their occupational efficiency.