Abstract
Abstract Psychogenic polydipsia, produced by a fixed interval 90 sec reinforcement schedule, was used to determine whether excessive ethanol consumption could be induced in the rat. By offering increasing concentrations of ethanol to each rat during a sequence of test sessions, an alcohol selection-rejection curve was obtained under the regimen of psychogenic polydipsia. A significant increase in ethanol intake occurred only at concentrations within a rat's normal preference range. At concentrations above 8 per cent the noxious taste of the ethanol apparently blocked significant consumption of this fluid. However, the small volumes of ethanol which were consumed at the higher concentrations may have reflected the additional source of calories present in this fluid.
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