Original article can be found at: http://www.informaworld.com/ Copyright Informa / Taylor and Francis Group [Full text of this article is not available in the UHRA]In this paper I defend interaction theory (IT) as an alternative to both theory theory (TT) and simulation theory (ST). IT opposes the basic suppositions that both TT and ST depend upon. I argue that the various capacities for primary and secondary intersubjectivity found in infancy and early childhood should not be thought of as precursors to later developing capacities for using folk psychology or simulation routines. They are not replaced or displaced by such capacities in adulthood, but rather continue to operate as our ordinary and everyday basis for social cognition. I also...