Medical contexts provide a rich opportunity to study important theoretical questions in cognitive development and to investigate the influence of a range of interacting factors relating to the child, the experience, and the broader social context on children's cognition. In the context of examples of research investigating these issues, we consider several specific advantages of conducting research in medical settings: the diverse range of participants, experiences, and potential research paradigms and the opportunities for student training. We discuss the benefits and challenges of conducting research within medical contexts and consider ways of attempting to maximize the former and of addressing the latter. (Contains 5 resources.)