Publications:
Ennis, R. H. (1996) Critical thinking. Upper Saddle River, NJ: Prentice-Hall.
Ennis, R.H. (1974). Definition in science teaching. Instructional Science, 3, 285-298
Ennis, R. H. (1969). Logic in teaching. Englewood Cliffs, NJ: Prentice-Hall.
Ennis, R.H. (1964). Operational
definitions. American Educational Research Journal, 1, 183-201.
(Reprinted in L.I. Krimerman (Ed.), (1969), The nature and scope of social
science: A critical anthology. New York: Appleton-Century-Crofts.
Pp. 431-444. (Title as reprinted: Operationism can and should
be divorced from covering law assumptions.)