“…Without discussing in detail the issues connected with the already commonly known distinctions between emotional intelligence understood as a set of abilities, competencies, personality traits or character features (see e.g. Jasielska, Leopold, 2000;Ledzińska, Zajenkowski, Stolarski, 2013;Matczak, 2006;Matczak, Knopp, 2013;Matczak, Knopp, 2019;Martowska, 2012;Mayer, Salovey, Caruso, 2000;Nęcka, 2003;Petrides, Furnham, 2001;Piekarska, 2020aPiekarska, , 2020bSzczygieł, 2006;Śmieja, 2018;Wytykowska, Petrides, 2007) and the multiplicity of ways of measurement resulting from such distinctions (test-based or questionnaire-based), it is worth considering what are the repercussions of this variety for the results of scientific research.…”