Cecilia M. Heyes, Senior Research Fellow in Theoretical Life Sciences at All Souls College, University of Oxford, is an experimental and theoretical psychologist. Heyes has had a distinguished impact on the field of social cognition with her work on imitation, which stresses the role of domain-general, associative mechanisms, rather than specific genetic adaptations. This work has led to fruitful and vigorous debates in the field, be it with evolutionary psychologists or with students of so-called "mirror" neurons. Recently, she has applied this point of view to other aspects of social cognition, including theory of mind. Her forthcoming book Cognitive Gadgets: The Cultural Evolution of Thinking argues that genetic evolution has merely tweaked human cognition; the big engines of human thought are products of cultural evolution.