John Paul Minda is a Professor of Psychology and a member of the Brain and Mind Institute at Western University, in London, Ontario. As a researcher, he is interested in thinking as it relates to concepts and categories. He runs a research laboratory that investigates how people learn new categories and represent them with concepts. He also studies how conceptual structure interacts with and affects behavioural outcomes. He has done research on medical expertise and on the kinds of reasoning tasks that physicians engage in. As an instructor, and as a psychologist in general, he is interested in other aspects of thinking as well. Every year since 2003, he has taught a course on the Psychology of Thinking.