This chapter highlights positivism and post-positivism in the social sciences. ‘Post-positivism’, much like ‘positivism’, is a notoriously imprecise term that nonetheless does significantly effective work in shaping academic controversies. Post-positivist approaches are loosely organized around a common rejection of the notion that the social sciences should take the natural sciences as their epistemic model. This rejection, which is a dissent from the naturalist position that all the sciences belong together and produce the same kind of knowledge in similar ways, often also includes a rejection of what are taken to be the central components of a natural-scientific approach: a dualist separation of knowing subjects from their objects of study, and a limitation of knowledge to the tangible and measurable. To get a handle on ‘post-positivism’, the chapter discusses these three rejections (naturalism, dualism, and empiricism) in turn.