William Revelle has been a professor of psychology at Northwestern University since 1973 where hs directs the graduate program in personality psychology. His teaching and research emphasizes that personality is the last refuge of the generalist in psychology and that personality theorists need to collaborate with cognitive, social, clinical  and biologically oriented psychologists.  His research ranges from developing new psychometric algorithms to the interative effect of personality, time of day and caffeine on cognitive performance. He is a former president of the Association of Research in Personality, the International Society for the study of Individual Differences, and the Society for Multivariate Experimental Psychology. He is the current chair of the Governing Board of the Bulletin of Atomic Scientists.