Rats received access to high or low saccharin concentrations or to distilled water or 2% saline prior to testing for conditioned taste aversion or neophobia. Pre-exposure to high saccharin concentration attenuated neophobia and taste aversion to high and low concentrations. Pre-exposure to the low concentration attenuated neophobia to both concentrations but attenuated taste aversion only to the low concentration. Saline and distilled water pre-exposure did not attenuate neophobia or taste aversion to either concentration. / Master of Science