The project includes three independent studies investigating pro-environmental behaviour and psychological barriers of such behaviour. The first study focuses on exploring experienced psychological barriers depending on individual characteristics (socio-demographic, cognitive or values/identity). The second study aims at investigating the role moral disengagement (Bandura, 2016) may play in reducing pro-environmental behaviour. The theory assumes that even people who feel environmental concern may find excuses to refrain from acting sustainably. The study, thus, attempts to test the assumption that moral disengagement reduces feelings of guilt, shame ad anxiety and, consequently, limits ppro-environmental behaviour. We expect also moral disengagement to be negatively related to environmental values and identity. In other words, individuals for whom environmental issues form a more central aspect of identity will be less likely to morally disengage. Third, there seems to be consensus in the literature that women are more concerned about climate change and report more pro-environmental behaviour than men. Little is known, however, about sources of those gender differences. Recent studies showed that sustainable or pro-environmental behaviour may be perceived as feminine and, thus, avoided by men reluctant to be associated with femininity (Swim et al., 2020). Moreover, it was shown that men report experiencing more psychological barriers in pro-environmental behaviour. Also, individuals who feel more feminine consistently report more pro-environmental behaviour (Desrochers & Zelenski, 2022). Therefore, in this study, we intend to explore the role of gender-role orientation-approximated by the BSRIshort questionnaire-on environmental concerns, behaviour and perceived barriers. Finally, the data set will be partially employed in the process of validation of the Slovak version of the Comprehensive Thinking Style Scale (Newton et al., 2021). The study includes two alternative versions of the CTSQ questionnaire. The large sample allows to explore factorial structure of the scale. Moreover, the presence of measures such as conspiracy beliefs, perceived scientific consensus about climate change, climate scepticism, trust in science and scientific thinking allows to delve deeper into the nomological network of the scale. The studies were preregistred and accepted by Ethical Board of the Centre of Social and Psychological Sciences of the Slovak Academy of Sciences.