Analyses of Theories and Methods of Physics and Psychology was first published in 1970. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions.This is Volume IV of the Minnesota Studies in the Philosophy of Science, a series published in cooperation with the Minnesota Center for Philosophy of Science at the University of Minnesota and edited by Herbert Feigl and Grover Maxwell. Dr. Feigl was the director of the Center.In a preface to the first volume in the series, Professors Feigl and Michael Scriven noted the extensive concern of the Center with “the meaning of theoretical concepts as defined by their locus in the ‘nomological net’ and the related rejection of the reductionist forms of operationism and positivism.” In this volume, several contributors are again concerned with philosophical, logical, and methodological problems of psychology. As before, some papers deal with broad philosophical issues, others with more specific problems of method or interpretation. However, a deep concern for logical and methodological problems of special relevance to the physical sciences is reflected in a number of essays.The contents are arranged in two sections, the first part being based on the papers and discussion from a conference held at the Center on the problems of correspondence rules. Contributors are Herbert Feigl, Paul K. Feyerabend, N.R. Hanson, Carl G. Hempel, Mary Hesse, Grover Maxwell, and William Rozeboom. The second group of essays, by various members of the staff of the Center and some of its visitors, reflects current issues and controversies of great interest. The contributors are William Demopoulos, Keith Gunderson, Paul E. Meehl (three essays), and Michael Radner.