Can There Be a Metrology for Psychometricians?
Metrology—the "science of measurement and its application" according to the International Vocabulary of Metrology (VIM)—is a body of knowledge traditionally bound to the measurement of physical quantities, sometimes with the further specification that only high quality (in some sense to be agreed) measurement-related activities constitute actual metrology, as those performed in the US by the NIST. Given the social reputation of measurement, it is not amazing that there is a tension to continue the historical process of expanding such a still strict scope, where in particular under scrutiny is the necessity that the object of measurement is a physical quantity. Arguing about metrology is then a good opportunity to discuss of the very nature of measurement and its limits, between science, technology, mathematics, and society.
Luca Mari (M.Sc. in physics; Ph.D. in measurement science) is a professor at the Cattaneo University –LIUC, Castellanza (VA), Italy, where he teaches courses on measurement science, statistical data analysis, and system theory. He is currently the chairman of the TC1 (Terminology) and the secretary of the TC25 (Quantities and units) of the International Electrotechnical Commission (IEC), and an IEC expert in the WG2 (VIM) of the Joint Committee for Guides in Metrology (JCGM). He has been the chairman of the TC7 (Measurement Science) of the International Measurement Confederation (IMEKO). He is the author or coauthor of several scientific papers published in international journals and conference proceedings. His research interests include measurement science and system theory.