1. ARNOLD, M. B. Emotion and personality. Vol. 1. New York: Columbia University Press, 1960.
2. BLANCHARD, R. J., & BLANCHARD, D. C. Crouching as an index of fear. Journal of Comparative & Physiological Psychology, 1969a, 67, 370–375.
3. BLANCHARD, R. J., & BLANCHARD, D. C. Passive and active reactions to fear eliciting stimuli. Journal of Comparative & Physiological Psychology, 1969b, 68, 129–135.
4. BLANCHARD, R. J., & BLANCHARD, D. C. Dual mechanisms in passive avoidance (I). Psychonomic Science, 1970, 00, 000–000.
5. BLANCHARD, R. J., BLANCHARD, D. C., & FIAL, R. A. Hippocampal lesions in rats, and their effect on activity, avoidance, and aggression. Journal of Comparative & Physiological Psychology, in press.