Flavor-evaluative conditioning is unaffected by contingency knowledge during training with color-flavor compounds.

In two experiments, participants inspected and drank a series of drinks, half of which contained sugarand half unpalatable Tween20 (tween). Each sugar and tween drink had a particular flavor and color. Following this training, the flavors of the sugar drinks were assigned higher hedonicevaluations than were those of thetween drinks, even though the participants did not reliably report which flavors had been present in the sugar and tween drinks during training.