Ralph F. Hefferline, Ph.D.

Behavior Analysis

Fred Simmons Keller	grad student		Columbia (Neurotree)
William N. Schoenfeld	grad student		Columbia (Neurotree)

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HEFFERLINE RF, PERERA TB. (1963) Proprioceptive discrimination of a covert operant without its observation by the subject. Science (New York, N.Y.). 139: 834-5
HEFFERLINE RF, KEENAN B. (1963) Amplitude-induction gradient of a small-scale (covert) operant. Journal of the Experimental Analysis of Behavior. 6: 307-15
HEFFERLINE RF, KEENAN B, HARFORD RA. (1959) Escape and avoidance conditioning in human subjects without their observation of the response. Science (New York, N.Y.). 130: 1338-9