Vivien SCHMIDT, address: Department of Management, University of Massachusetts/Boston, Boston, MA 02125, phone 617 929-8060 (home) 205 Beacon Street, Boston, MA 02116, phone 617 267-7738. Affiliation: University ofMassachusetts/Boston, Associate Professor. Education: Ph.D. Political Science, 1981, University of Chicago. Publications: "Four Models of Explanation" Methodology and Science, vol 21, no.3 (1988); "The Historical Approach to Philosophy of Science: Toulmin in Perspective" Metaphilosophy vol 19, no.3 (1988); "Four Approaches to Science and their Implications for Organized Theory and Research" Knowledge vol 9, no.1 (1987); "Four Approaches to Scientific Rationality" Methodology and Science vol 19, no.3 (1986); a number of articles on French politics and political economy.