Changing Tastes and Effective Consistency
研究单一商品下品味变化时，天真与老练选择方案何时唯一且一致，并可用不变品味效用表示，提出有效一致性假设及其显示偏好检验。
In a single commodity setting with changing tastes, an individual’s consumption plan can be obtained using naïve or sophisticated choice. We provide two sufficient conditions for when the solutions are unique and agree and the common plan is representable by a non‐changing tastes utility. Because the solution is not revised over time, the plan and associated preferences are referred to as being effectively consistent. Afriat‐style revealed preference tests are derived. The assumption of effective consistency can mitigate the problems of vulnerability to Dutch Books, non‐existence of a competitive equilibrium and the aggregation of heterogeneous agents with changing tastes.