Experimental design (top) used by Delamater (2007) to study extinction of specific flavor-taste associations in a flavor preference learning paradigm. Each of four distinct flavor cues (A, B, C, D) were separately paired with different nutrients (Nutr 1, Nutr 2) during the Acquisition phase, but two of these was presented without any nutrients during the Extinction phase. One of the nutrients was then devalued by being paired with lithium chloride (LiCl) during the US devaluation phase, and, finally, the rats were given separate preference tests between A and B or C and D. Data from the preference tests appear below. See text for additional details.