Constructing Bounds on Per Capita Income Differentials across Countries
研究了购买力平价比较中指数公式选择对人均收入差异的影响，通过假设同质偏好或估计需求系统来构建更紧的界限，并应用于OECD国家。
The results of purchasing power parity (PPP)‐based comparisons of income across countries can be quite sensitive to the choice of index number formula. Tighter bounds on per capita income differentials can be constructed either by assuming homothetic preferences, or by estimating a demand system. Both approaches are used to construct bounds on per capita income differentials across the OECD countries. The paper concludes by discussing the strengths and weaknesses of each approach. JEL Classification C 43; F 31; O 47