Bachelor, Wabash College, 1963. Doctor of Philosophy, Purdue University, 1967. Doctor of Philosophy (honorary), Purdue University/Indiana University, 1993.
Assistant professor, Carnegie-Mellon U., Pittsburgh, 1967-1970; professor, Northwestern University, Evanston, Illinois, 1970-1985; professor, California Institute Technology, Pasadena, since 1985; Executive officer for social science, California Institute Technology, Pasadena, 1989-1992; chairman division humanities and social science, California Institute Technology, Pasadena, since 1992.
Fellow American Academy Arts and Sciences, Econometric Society, Public Choice Society (president 1980-1982). Member Economic Science Association (executive committee 1986-1988).
Married Bonnie Higginbottom, May 23, 1970 (divorced July 2004). Children: Stephen, J. Henry, Meg. Married Elaine Fleming, December 12, 2006.