Humphreys P, Freedman D. The grand leap. 1996.

Humphreys P. Philosophy of Science. In: Reich W, editor. The Encyclopedia of Bioethics. New York: MacMillan Publishing Company; 1995.

Humphreys P. Abstract and concrete. Philosophy and Phenomenological Research. 1995;55(1):157–161.

Humphreys P. Computational science and scientific method. Minds and Machines. 1995;5(4):499–512.

Patrick Suppes, Scientific Philosopher (edited collection). Volume 1: Probability and Probabilistic Causality. Volume 2: Philosophy of Physics, Theory Structure, Measurement Theory. Volume 3: Philosophy of Language, Logic, Action and Learning Theory. Dordrecht: Kluwer Academic Publishers; 1994.

Humphreys P. Seven theses on thought experiments. Philosophical Problems on the Internal and External Worlds: Essays on the Philosophy of Adolf Grunbaum. 1993:205–227.

Humphreys P. Greater unification equals greater understanding?. Analysis. 1993;53(3):183–188.

Humphreys P. A conjecture concerning the ranking of the sciences. Topoi. 1990;9(2):157–160.

Humphreys P. Computer simulations. In: PSA: Proceedings of the biennial meeting of the philosophy of science association. Vols. 1990. Philosophy of Science Association; 1990. pp. 497–506.

Jacob A, Humphreys P. Degenerescence (Lakatos); Dependence functionelle et explication functionelle; and Niveau d’explication. In: Encyclopedie Philosophique, Vol II. Presses Universitaires de France; 1989.