Psychologists and marketers alike are aware that product labels can trigger brand loyalty and influence customers’ perceptions of quality. A recent experiment, however, goes beyond loyalty and suggests that expectation can alter the experience of taste itself.
In the experiment, 300 men and women tasted two versions of a beverage each - one a regular cola and the other the same cola with a few drops of white vinegar added. A prior survey had found that most cola drinkers thought vinegar would worsen the taste. Participants were told only that one of the beverages, called “cola extra,” contained an unspecified secret ingredient.
Researchers found that in a blind taste test of 100 people, 60 percent actually preferred the vinegar-enriched “cola extra.” A second group of 100 learned after they had tasted both beverages that vinegar was the secret ingredient; this group preferred “cola extra” by the same percentage. A final group was told before tasting that one of the colas contained vinegar - here, only about one-third of respondents favored “cola extra.”
These results echo earlier work in sensory neuroscience: functional-MRI studies show that when wine drinkers are told a bottle is expensive, activation in reward-related gustatory regions rises even though the wine is identical. Marketing researchers likewise observe that labeling chocolates or coffees as “premium” consistently heightens reported flavor intensity. Taken together, such findings suggest that expectation can penetrate beyond conscious belief and modulate the neural coding of taste.
Because the cola experiment sampled mostly habitual cola drinkers aged 18-35, future research should test other age groups and less familiar beverages to see whether the effect generalizes.
It can be inferred from the passage that which of the following, if true, would be most damaging to the conclusion that expectation influences taste?
A. A majority in all three test groups preferred standard cola to "cola extra," regardless of whether they were told it contained a secret ingredient.
B. The experiment was conducted again with vanilla as the secret ingredient and produced similar results.
C. Taste testers were told that a "bitter ingredient," rather than a "secret ingredient," had been added to the colas.
D. A previous survey had established that consumers thought vinegar would worsen the taste of cola.
E. Both colas were given to taste testers in glasses that looked exactly alike.