“…For detailed wording (translated from German), descriptive statistics, and scale reliabilities of all items please refer to Supplementary Table S6 . Efficacy beliefs were assessed as three distinct factors, referring to the agency as an individual ( self-efficacy , three items, two of which were phrased identically as in Study 1), as a member of a group ( participatory efficacy , three items, two of which were phrased as in Study 1) and as a whole group ( collective efficacy , three items; e.g., “Through collective efforts of myself and other people, we can achieve progress in climate protection”; van Zomeren et al, 2013 ; Bamberg et al, 2015 ; Lauren et al, 2016 ; Hamann et al, 2021 ). Emotions associated with efficacy were measured as positive efficacy affect (feeling hopeful or motivated, two items; Hamann and Reese, 2020 ) and as negative efficacy affect (feeling helpless or frustrated, two items; Geiger et al, 2021c ).…”