Kenneth Hugdahl is Professor of Biological and Medical Psychology at the University of Bergen, Norway. He is coeditor of Brain Asymmetry and The Asymmetrical Brain (2002), both published by the MIT Press.

Richard J. Davidson is the William James and Vilas Research Professor of Psychology and Psychiatry at the University of Wisconsin. He is coeditor of Brain Asymmetry (MIT Press, 1994) and Foundations in Social Neuroscience (MIT Press, 2001).