Endogeneity Testing in a Supply and Demand Framework
探讨了Wu-Hausman内生性检验在估计需求方程时的检验功效与归一化选择的关系,发现功效不独立于因变量是价格还是数量的选择,并通过蒙特卡洛实验验证,最后应用于美国禽肉需求分析。
The powers of Wu-Hausman endogeneity tests are related to the normalization d ecision in estimating demand equations. Power is not invariant to the choice bet ween quantity and price as the dependent variable. A theoretical result due to N akamura and Nakamura_(1984) is used to explore the dependence of power on parame ters of the supply and demand system. The theoretical result is corroborated wit h a Monte Carlo experiment. The power results are used to analyze the U.S. deman d for poultry meat wherein price, but not quantity, is found to be predetermined Copyright 1986 by MIT Press.