Changing Tastes and Effective Consistency
In a single commodity setting with changing tastes, an individual's consumption plan can be obtained using naive or sophisticated choice. We provide two sufficient conditions for when (i) the solutions are unique and agree and (ii) 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.