UNITY OF SCIENCE AS A WORKING HYPOTHESIS, by Paul Oppenheim and Hilary Putnam
THE THEORETICIAN'S DILEMMA: A Study in the Logic of Theory Construction, by Carl G. Hempel
DEFINITIONS, EXPLANATIONS, AND THEORIES, by Michael Scriven
DISPOSITION CONCEPT'S AND EXTENSIONAL LOGIC, by Arthur Pap
COUNTERFACTUALS, DISPOSITIONS, AND THE CAUSAL MODALITIES, by Wilfrid Sellars
GENERAL STATEMENTS AS RESULTS OF INFERENCE? by H. Gavin Alexander
THE SIGNIFICANCE OF EXPERIENCE OF THE INDIVIDUAL FOR THE SCIENCE OF PSYCHOLOGY, by Karl Zener
THE "MENTAL" AND THE "PHYSICAL," by Herbert Feigl
WHEN SHALL WE USE OUR HEADS INSTEAD OF THE FORMULA? by P. E. Meehl
APPENDIX: INTENTIONALITY AND THE MENTAL
Introduction, by Wilfrid Sellars
Setences about Believing, by Roderick M. Chisholm
Chisholm-Sellars Correspondence on Intentionality