Grzegorz Maciejewski holds a postdoctoral degree in Economic Sciences. He is a Professor at the University of Economics in Katowice and is Head of the Market and Consumption Department. He is a research projects manager at the Research and Development Center in Katowice and the manager and contractor of six grants from the Ministry of Science and Higher Education. He is an academic tutor. His scientific interests are mainly in the area of behavioral economics. He is the author of over 150 articles in the areas of consumer behavior, the marketing strategies of enterprises, and market and marketing research methodologies. Member of the Polish Society of Market and Opinion Researchers (PTBRiO), the Polish Scientific Marketing Society, Polish Economic Society, and the PGV International Scientific Network. ORCID no. 0000-0002-1318-0747.