CAN AGGREGATION ACROSS GOODS BE ACHIEVED BY NEGLECTING THE PROBLEM? PROPERTY INHERITANCE AND AGGREGATION BIAS*
研究两种框架下的复合商品问题，证明近似加总表示总是可能的，但初始函数的标准经济性质不一定被近似加总继承，并通过实证考察加总偏差的严重性。
This article studies the problem of composite commodity in two different frameworks. In one case, aggregation across goods is analyzed for elementary goods that satisfy an optimality condition. The unrestricted case is also examined. The notion of an approximate aggregate representation is formalized and shown to be always possible. Can thereby aggregation issues simply be neglected in economic contributions? I show that the standard economic properties of initial functions are not necessarily inherited by the approximate aggregate. The severity of this problem and the size of the aggregation bias across inputs are investigated empirically.