Constructivism primarily seeks to demonstrate how core aspects of international relations are, contrary to the assumptions of neorealism and neoliberalism, "socially constructed", that is, they are given their form by ongoing processes of social practice and interaction. Alexander Wendt calls two increasingly accepted basic tenets of Constructivism "that the structures of human association are determined primarily by shared ideas rather than material forces, and that the identities and interests of purposive actors are constructed by these shared ideas rather than given by nature".