Publications

Effects of enriched and restricted early environments on the learning ability of bright and dull rats

The bright animals reared in enriched environments [group-housing with numerous enrichment gadgets] showed no improvement in learning ability over bright controls reared under normal laboratory condition [group-housing in barren cage]. The dull animals, on the other hand, benefited greatly from...

Year Published: 1958Animal Type: Rat, Rodent

Citation: Cooper, R. M., Zubek, J. P. 1958. Effects of enriched and restricted early environments on the learning ability of bright and dull rats. Canadian Journal of Psychology 12, 159-164.

Blood pressure of the normal rhesus monkey

Most [single-housed] monkeys could be trained to sit quietly during blood pressure measurements. [Training protocol is not described.]

Year Published: 1957Animal Type: Macaque

Citation: Smith, C. C., Ansevin, A. 1957. Blood pressure of the normal rhesus monkey. Proceedings of the Society for Experimental Biology and Medicine 96, 428-432.

Husbandry practices for the quarantining and conditioning of sub-human primates

Conventional double-tier caging system with dark lower-rows is documented.

Year Published: 1957Animal Type: Nonhuman Primate

Citation: Gay, W. I. 1957. Husbandry practices for the quarantining and conditioning of sub-human primates. Proceedings of the Animal Care Panel 7, 83-88.

An experimental investigation of the role of social experience in the production of gastric ulcers in hooded rats

Rats in a chronic approach-avoidance conflict situation alone had significantly greater resultant ulceration than animals tested together.

Year Published: 1957Animal Type: Rat

Citation: Conger, J. J., Sawrey, W. L., Turrell, E. S. 1957. An experimental investigation of the role of social experience in the production of gastric ulcers in hooded rats. American Psychologist 12, 410 (Abstract).

The contribution of environment to uniformity: Variance control, refinement in pharmacology

Chance discovered that some environments are more favourable to uniformity than others. The most uniform populations of all were those kept in an environment optimal for their well-being. In this respect, the goal of reduction is precisely the same as...

Year Published: 1957Animal Type: All/General

Citation: Chance, M. R. A. 1957. The contribution of environment to uniformity: variance control, refinement in pharmacology. Laboratory Animals Bureau, Collected Papers 6, 59-73.

Social interactions of rhesus monkeys

Performance of learning tasks by rhesus monkeys is facilitated when tested with a partner compared to being tested alone.

Year Published: 1956Animal Type: Macaque

Citation: Miller, R. E., Murphy, J. V. 1956. Social interactions of rhesus monkeys. II. Effects of social interaction on the learning of discrimination tasks. Journal of Comparative and Physiological Psychology 49, 207-211.

Alarm reaction and normal blood picture in Macaca mulatta

Authors observed an elevated White Blood Cell Count as alarm reaction to physical restraint in rhesus monkeys.

Year Published: 1956Animal Type: Macaque, Nonhuman Primate

Citation: Ives, M., Dack, G. M. 1956. Alarm reaction and normal blood picture in Macaca mulatta. Journal of Laboratory Clinical Medicine 47, 723-729.

Influence of gentling on physiology of the rat

Handled animals tended to have greater skeletal length than control animals.

Year Published: 1956Animal Type: Rat, Rodent

Citation: Ruegamer, W. R., Silverman, F. R. 1956. Influence of gentling on physiology of the rat. Proceedings of the Society for Experimental Biology and Medicine 92, 170-174.

Social structure of a colony of Macaca mulatta

1. Various methods of observation were tried in order to obtain accurate records of individual behaviour in a social environment. Observing one individual for about an hour and recording the behaviour every two minutes was found to be the most...

Year Published: 1956Animal Type: Macaque

Citation: Chance, M. R. A. 1956. Social structure of a colony of Macaca mulatta. Animal Behaviour 4, 1-13.

Environmental factors influencing gonadotrophin assay in the rat

The variation in ovary weight (test response) was greater if the cages were small, if there was frequent disturbance by changing cages and cage-mates, and if the rats were caged either singly or in groups larger than two, with the...

Year Published: 1956Animal Type: Rat, Rodent

Citation: Chance, M. R. A. 1956. Environmental factors influencing gonadotrophin assay in the rat. Nature 177, 228-229.