The Influence of Psychological Ownership of Nature and Legacy Motivation on Pro-Environmental Decision-Making in the Intergenerational Dilemma

Human behavior drives environmental degradation, yet research often neglects the intergenerational dimensions of pro-environmental decisions. Individuals frequently discount future generations’ needs due to power asymmetries, lack of reciprocity, and psychological distance, thereby exacerbating the tragedy of the commons. To address this intergenerational dilemma, this research investigates the roles of psychological ownership of nature and legacy motivation across two studies. The findings reveal that both constructs significantly promote intergenerational pro-environmental decision-making. Specifically, individuals with a stronger psychological connection to nature and higher impact legacy motivation are more likely to prioritize long-term environmental sustainability. Furthermore, impact legacy motivation mediates the effect of psychological ownership of nature on these decisions. Cultivating a sense of ownership over nature catalyzes a desire to leave a tangible positive impact, which subsequently drives sustainable choices. By translating environmental attachment into intergenerational responsibility, this study provides a robust empirical psychological foundation for policies aimed at fostering individual-level sustainable behaviors for future generations.