Fig. 1.
Percentage of responses on the ethanol-appropriate lever averaged across five-session bins in which water (open circles) or 1.0 g/kg ethanol (closed circles) was administered during discrimination training of middle-aged cynomolgus monkeys. a) Monkeys 25057, 25078 and 25079 were previously trained to discriminate 1.0 g/kg ethanol and monkey 25070 was previously trained to discriminate 2.0 g/kg ethanol; b) Naïve females