1. Ader, R., 1965, Effects of early experiences and differential housing on behaviour and susceptibility to gastric erosions in the rat, J. Comp. Physiol. Psychol.60:233–238.
2. Bainbridge, J. G., 1970, The inhibitory effect of amphetamine on exploration in mice, Psychopharmacologia B erlin18:314–319.
3. Battig, K., 1969, Drug effects on exploration of a combined maze and open field system by rats, In: Experimental Approaches to the Study of Emotional Behavior (E. Tobach, ed.), pp. 880–897, New York Academy of Sciences, New York.
4. Berlyne, D. E., 1955, The arousal and satiation of perceptual curiosity in the rat, J. Comp. Physiol. Psychol.48:238–246.
5. Berlyne, D. E., 1960, Conflict, Arousal and Curiosity, McGraw-Hill, New York.