Besides collective efficacy, individuals’ belief that their own contribution makes a difference to collective efforts (i.e., participatory efficacy belief; van Zomeren et al., 2013) seems also crucial for the realization of collective behaviour. There are studies indicating that it could play an important role in their participation intention to collective pro-environmental behaviour (Bamberg et al., 2015; Hamann & Reese, 2020; for a review, see Hamann et al., 2023).