F Gregory AshbyF. Gregory Ashby is Distinguished Professor Emeritus of Psychological and Brain Sciences at the University of California, Santa Barbara, USA. He is the author of more than 180 publications, including nine articles in Psychological Review and four boos. He is past president of the Society for Mathematical Psychology and past chair of the NIH Cognition and Perception Study Section. His awards include the Howard Crosby Warren Medal in 2017. Read More Read Less