Fjeld C R, Sommer R, Becker F D, Warholic J
J Am Diet Assoc. 1983 Apr;82(4):389-93.
Tests of nutrition knowledge and food preference were given to matched samples of food cooperative and supermarket shoppers. The food preferences of cooperative shoppers, but not their nutrition knowledge, differed significantly from the preferences of supermarket shoppers. Preferences of supermarket shoppers were greater for foods having a low index of quality, while those of the cooperative shoppers were greater for foods having a high index of quality.
对食品合作社和超市购物者的匹配样本进行了营养知识测试和食物偏好测试。合作社购物者的食物偏好与超市购物者的偏好存在显著差异，但他们的营养知识并无显著差异。超市购物者对质量指数较低的食品偏好更高，而合作社购物者对质量指数较高的食品偏好更高。
