Eddie Brummelman is an associate professor at the Research Institute of Child Development and Education at the University of Amsterdam in the Netherlands. He studies the developing self in childhood. He is committed to using developmental science to address social problems, such as inequality. During the writing of this article, he was supported by a Jacobs Foundation Research Fellowship (2020-1362-02) and an NWO Talent Programme Vidi grant (VI.Vidi.211.181).