Why Do Longtermists Care about Protecting the Environment? An Investigation on the Underlying Mechanisms of Pro-Climate Policy Support

Amid the pressing threat of climate collapse, longtermists emerge as a critical group poised to undertake collective action for the planet's future. This pre-registered, highly powered study (N = 784 U.S. subjects recruited through Prolific) reinforces the association between longtermism and pro-climate attitudes, revealing that longtermists markedly support diverse pro-environmental policies, including those focusing on climate justice for minoritized groups in present-day and future generations. Notably, these associations are consistent after controlling for various demographic indicators, emphasizing their widespread relevance in the US context. Going beyond existing literature, this research delves into the underpinnings of longtermists' pro-environmental proclivities. Critically, while longtermists exhibit heightened future-oriented concern for themselves and others, it is their capacity to imagine a brighter, more sustainable future and their broadened prosocial reach that elevates their environmental concern above and beyond the influence of demographic differences or other mediating factors. These insights present a promising foundation for cultivating broader pro-environmental engagement, highlighting the role of imagination and prosociality in shaping sustainable action.