From menus to misbeliefs: Absolute frequencies of healthy and tasty dishes predict the unhealthy = tasty belief in restaurants

We examine whether the prevalence of healthy and tasty food options in restaurant menus leads to the formation of beliefs about the relationship between healthiness and taste that deviate from the correlation of healthiness and taste ratings. Participants (N = 195) rated the healthiness and taste of twelve dishes from two different restaurant types (American and vegetarian restaurants), estimated the frequencies of healthy and tasty options, and reported their health-taste beliefs. Results show that ratings of perceived healthiness and expected taste are uncorrelated in both restaurant types, but participants formed the misbelief that unhealthy dishes taste better than healthy dishes to a greater extent in American than in vegetarian restaurants. Regression analyses revealed that the absolute frequencies of food options were significantly related to participants' health-taste beliefs while controlling for the correlation between healthiness and taste ratings in both restaurant types. Participants were more likely to believe that healthy food tastes better than unhealthy food when they perceived that healthy and tasty food were both frequent (or infrequent) in the respective restaurant type. Our results provide evidence that relying on absolute frequencies, rather than covariation, to infer the relationship between healthiness and taste may lead to misbeliefs that do not reflect the health-taste correlation of individual food items.