Conditional and unconditional components of post-shock freezing

Species-specific defense reactions and avoidance learning.

Robert C. Bolles · Psychological Review · 1970 · 1.6K citations

Life Sciences, Behavioral Sciences, Zoology +12

Crouching as an index of fear.

Robert J. Blanchard, D. Caroline Blanchard · Journal of Comparative and Physiological Psychology · 1969 · 1.1K citations

Agriculture, Behavioral Sciences, Psychology +4

A perceptual-defensive-recuperative model of fear and pain

Robert C. Bolles, Michael S. Fanselow · Behavioral and Brain Sciences · 1980 · 835 citations

Life Sciences, Behavioral Sciences, Psychology +17

Evidence from rats that morphine tolerance is a learned response.

Shepard Siegel · Journal of Comparative and Physiological Psychology · 1975 · 659 citations

Medicine, Pharmacology, Psychology +14

Conditioned fear as revealed by magnitude of startle response to an auditory stimulus.

Judson S. Brown, Harry I. Kalish, Ilya Farber · Journal of Experimental Psychology · 1951 · 651 citations

Life Sciences, Behavioral Sciences, Neuroscience +14