Résumé
This chapter suggests an articulation between relatedness and motivation. The author's study on relatedness can be reconciled with research on the relationship between man and nature. These approaches facilitated the development of empirical research aimed at measuring the correlations between nature‐relatedness, and pro‐environmental attitudes and behaviors. The interface between the types of pedagogical devices to which students are subjected and their responses to relatedness measurement scales show that environmental education and sustainable development activities carried out at the level of the external environment encourage the development of an emotional bond with nature. The “complex model of human motivations” makes it possible to highlight the psychological stakes of education for sustainable development by identifying three motivation systems: motivations compatible with the psychological development of the individual or, on the contrary, those that block it or even lead to regression.