Roger W. Sperry’s Monist Interactionism Thomas Natsoulas, University of California, Davis The Journal of Mind and Behavior, Winter 1987, Vol. 8, No.1, Pages 1-22 ISSN 0271-0137 Sperry has proposed a solution to the mind-body problem that is both physical monist and, surprisingly for many readers, interactionist. This combination, among other features of his position, has