Conditioned taste aversions: Two-stimulus tests are more sensitive than one-stimulus tests

Abstract

Weanling and mature rats were presented with saccharin or saline solutions for 1 h on alternate days. Following exposure to saccharin, rats were injected with 0, 21, or 37 mg/kg of cyclophosphamide. Injections had no significant effect on saccharin preference in one-stimulus tests, but had a highly significant effect in two-stimulus tests. © 1971 Psychonomic Society, Inc.