The article focuses on the main problems of the development of the soft (perceptual) metrology as one of the new progressive areas of modern metrology that has appeared as a result of the dissemination of the information measuring technologies into the field of knowledge of non-physical phenomena and processes. An overview and analysis of well-known works on the topic of soft metrology are conducted. The areas of soft metrology research have been considered and analyzed, in particular, the investigation of the correlation between human, subjective responses to stimuli and physical, objective measurements. The question of the methodology of carrying out sensometrical measurements, that is, measurements of quantities characterizing the human sensations and responses to stimuli is considered. The main tasks of the research in the field of soft metrology for the implementation of its concept in practical applications, in particular in robotics have been established.
 W. Thomson, “Lecture on Electrical Units of Measurement”, in Lectures, vol.1, p.73, 1883, [Online], Available: https://archive.org/stream/popularlecturesa01kelvuoft#page/73/mode/1up|Popular.
 OIML V 2:2012 (E/F), International vocabulary of metrology: Basic and general concepts and associated terms, VIM3, 2012.
 “Evolving Needs for Metrology in Trade, Industry and Society and the Role of the BIPM”. A report prepared by the CIPM for the governments of the Member States of the Metre Convention, Intergovernmental Organization of the Metre Convention, 2007.
 M. Pointer, “Report to the National Measurement System Directorate: New directions – Soft Metrology”, NPL Report CMSC 20/30, 2003.
 L. Rossi, “Objectifying the Subjective: Fundaments and Applications of Soft Metrology”, in New Trends and Developments in Metrology, Luigi Cocco, Ed., London: IntechOpen, 2016, part 10.
 E. Galanter, K. Hossain, B. Berglund, P. Bourgine, and M.C. Morrone, “Measuring the Impossible”, Report of the MINET High-Level Expert Group, EU NEST, Bruxelles, 2010.
 K. Berka, Measurement: Its Concepts, Theories, and Problems, Dordrecht: Springer Netherlands, 1982.
 V. Motalo, “Soft Metrology: Dissemination of the Information Measuring Technologies into the “Measuring the Impossible” Area”, in International conference of metrologists ICM'2019 (XXIII international seminar of metrologists ISM'2019), Lviv, Ukraine, 2019, pp. 27-29.
 T. Goodman, “Measurements of physical parameters in sensory science”, in Measurements with persons: theory, methods, and implementation areas, B. Berglund, G.B. Rossi, J.T. Townsend, and L. Pendrill, Eds., New York: Psychology Press Taylor & Francis Group, 2012, part 3.
 IEC 60050-300:2001, International Electrotechnical Vocabulary: Electrical and electronic measurements and measuring instruments, Part 311: General terms relating to measurements, 2001.
 V. Motalo, “Analysis of the Measurements Scales”, Measuring Techniques and Metrology, vol. 76, pp. 21-35, 2015, (in Ukrainian).