Comparability and Comparison Levels used in Choices among Consumer Products
提出产品可比性分类法，假设消费者在耐用品选择中使用抽象比较水平，并通过互动调查数据验证，发现即使可具体比较时也倾向抽象比较，且可比性高的选择更难。
A typology for the classification of products according to their comparability is presented and hypotheses about the levels of comparison used by consumers in making choices among durable goods are proposed. The hypotheses are tested with data provided by subjects who made choices among durable goods and indicated their choice criteria in an interactive survey. Subjects tended to use abstract levels of comparison even when items could be compared easily on concrete attributes, and choices between more comparable items were more difficult to make than those between less comparable items.