“…We created specific cartographic tasks for purposes of our experiment. Categorization was measured with CMMS -Categorization of Multivariate Map Symbols, which is based on previous research in categorization (Chiu, 1972;Ji et al, 2004;Norenzayan et al, 2002) and on the relationship between cognitive style and map reading (e.g., Herman et al, 2019;Kubíček et al, 2016;Opach, Popelka, Doležalová, & Rod, 2018;Stachoň et al, 2018;Šašinka et al, 2018). The CMMS measures a specific component of categorization, namely clustering (cf.…”