Abstract Increasingly initiatives are formed from the bottom-up, by for example community members themselves, to stimulate pro-environmental behaviour in their overarching group. But can such bottom-up initiatives motivate pro-environmental behaviour, and why? I propose that perceiving a pro-environmental initiative as formed by regular group members themselves (i.e. from the bottom up) enables pro-environmental social identity formation, motivating behaviour accordingly. Three field studies around different initiatives supported this. Perceived bottom-up formation is positively associated with pro-environmental social identity (in content and strength), for members of the initiative (Study 1) and the overarching group (Study 2), and bottom-up pro-environmental initiative salience strengthens pro-environmental social identity in the overarching group (Study 3). Perceived bottom-up formation partly relates to self-reported pro-environmental behaviour (Study 2) and intentions (Studies 1 and 3) via pro-environmental social identity. Bottom-up pro-environmental initiatives may thus accelerate the transition towards pro-environmental practices; theoretical and practical implications are discussed.

中文翻译：

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自下而上改变环境行为：亲环境社会认同的形成

摘要 越来越多的倡议是自下而上形成的，例如由社区成员自己发起，以在其总体群体中激发亲环境行为。但这种自下而上的举措能否激发亲环境行为，为什么？我建议认为，由常规团体成员自己（即自下而上）形成的亲环境倡议能够形成亲环境的社会认同，并相应地激励行为。围绕不同举措的三项实地研究支持了这一点。对于倡议（研究 1）和总体组（研究 2）的成员而言，感知到的自下而上的形成与亲环境社会认同（在内容和强度方面）呈正相关，自下而上的亲环境倡议显着性加强了总体群体中的亲环境社会认同（研究 3）。感知自下而上的形成部分与通过亲环境社会认同自我报告的亲环境行为（研究 2）和意图（研究 1 和 3）有关。因此，自下而上的环保举措可能会加速向环保做法的转变；讨论了理论和实践意义。