Concepts, Theories, and the Mind-Body Problem was first published in 1958. 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 II 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. The series editors are Herbert Feigl and Grover Maxwell, who are also co-editors, with Michael Scriven, of this volume. The ten papers by eleven authors which make up the content of this volume are the result of collaborative research of the Center in philosophical and methodological problems of science in general and psychology in particular. The contributors are Paul Oppenheim, Hilary Putnam, Carl G. Hempel, Michael Scriven, Arthur Pap, Wilfrid Sellars, H. Gavin Alexander, P.F. Strawson, Karl Zener, Herbert Feigl, and Paul E. Meehl. In addition, an extensive discussion of "Internationality and the Mental" by Wilfrid Sellars and Roderick Chisholm is presented in an appendix. In a review of this volume the journal Psychiatric Quarterly commented: "These essays will not prove easy for the layman to read, but he can hardly fail to find his effort rewarded if he is persistent. For the professional behavioral scientist increased awareness and caution-in his use of scientific language, and thinking about scientific theory-should result." One of the papers in this volume, "The 'Mental' and the 'Physical'" by Herbert Feigl, has been published by the University of Minnesota Press with further discussion by Dr. Feigl as a separate book, The "Mental" and the "Physical" The Essay and a Postscript.