Abstract

In Experiment 1, hungry rats with intravenous cannulae were fed a non-nutritive sweetened coffee solution on 5 occasions. Shortly after each such drinking period, one group was infused with 5–10 ml of 10% glucose solution; a second group was similarly infused with 0.9% saline solution and a third group was not infused at all. In a subsequent preference test between sweetened coffee and saccharin solution, the saline group had a reduced preference for coffee relative to the other two groups, which did not differ significantly between themselves. Experiment 2 was a replication in which a number of procedural details were changed. The results were similar to those of Experiment 1.

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