“…Nonetheless, evidence has been mixed regarding whether trait optimism or closely related constructs, such as hope and future subjective wellbeing, are reliably associated with greater PEB (Ojala, 2012(Ojala, , 2015Kaida, 2016a,b, 2017). Similar mixed findings have been reported for the relations among support for geoengineering technologies, optimism, and engagement in conservation behavior (Murtagh et al, 2015;Rehman et al, 2021). Most of the research on the associations between subjective wellbeing, optimism-pessimism, and PEB has been crosssectional, precluding an examination of "true" causal mechanisms.…”