INCREASED EATING IN RATS DEPRIVED OF RUNNING<sup>1</sup>
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Abstract
Daily food intake in rats was temporarily reduced by the introduction of an activity wheel and temporarily increased by the subsequent removal of the wheel. When this outcome is coupled with the positive relation between food deprivation and running-and food deprivation is seen as a loss of eating rather than as a physiological state-there is the suggestion that the total behavior output of the organism may be regulated as such. Specifically, when the rat is deprived of a behavior that recurrently comprises a large part of its total daily activity, an increase may occur in some other behavior.