Some other social sciences, such as geography or anthropology, have adopted the concept of affect during the last decade. In French psychoanalysis a major contribution to the field of affect comes from André Green. The focus on affect has largely derived from the work of Deleuze and brought emotional and visceral concerns into such conventional discourses as those on geopolitics, urban life and material culture. Affect has also challenged methodologies of the social sciences by emphasizing somatic power over the idea of a removed objectivity and therefore has strong ties with the contemporary non-representational theory.