My research is principally in the philosophy of science, specifically, (i) the realism/anti-realism debate, (ii) Kuhn's philosophy of science, and (iii) the social epistemology of science. I am especially interested in collaborative research and the notion of scientific authorship. I have also published on collective intentionality and the philosophy of the social sciences. In addition, I have conducted empirical studies on the relationship between age and scientific productivity.