“…The first part of the questionnaire was composed of questions about the general information of participants, while the second part was composed of questions about the effects of material type and material colour tone on spatial perception. Surveys containing semantic differentiation scales, which have been verified and found reliable in some previous studies, were used in the design of the questionnaire (Yıldırım et al, 2014(Yıldırım et al, , 2015(Yıldırım et al, , 2020a(Yıldırım et al, , 2021Ayalp et al, 2016;Burnard et al, 2017;Müezzino glu et al, 2021). The semantic differential scale was listed from positive to negative (1: positive, 7: negative) and was composed of 7 steps and 11 bipolar adjective pairs.…”