British Journal of Psychology

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Volume 60 Issue 2 (May 1969), Pages 149-285

WATER DEPRIVATION AND PERFORMANCE IN THE CLOSED FIELD TEST (pages 225-231)

Twenty male and 20 female Wistar rats were run in the Hebb‐Williams closed field test after 6, 12, 24 or 47 hr. deprivation of water. Performance was divided into two major components representing problem‐solving and exploratory behaviour. Increasing the degree of water deprivation had only a slight effect on problem‐solving but a marked effect on exploration. It was concluded that variations in motivational level have their effects on competing responses rather than capacity to learn or solve problems and that, for the comparative psychologist, equation of motivational level in different species may not be a serious problem if competing responses can be eliminated.

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