William Bechtel is Professor of Philosophy at the University of California, San Diego, and a Fellow of the American Association for the Advancement of Science. He is the author of Mental Mechanisms: Philosophical Perspectives on Cognitive Neuroscience and other books.

Robert C. Richardson is Charles Phelps Taft Professor of Philosophy and a University Distinguished Research Professor at the University of Cincinnati, and a Fellow of the American Association for the Advancement of Science. He is the author of Evolutionary Psychology as Maladapted Psychology (MIT Press, 2007).