Identification and Estimation of Engel Curves with Endogenous and Unobserved Expenditures
研究了在支出数据存在测量误差和联立性导致内生性时，如何识别和估计恩格尔曲线的参数，提出了扩展的控制函数估计方法。
Summary When dealing with the estimation of Engel curves, measurement errors in expenditure data and simultaneity are likely sources of endogeneity. In this paper we study identification of the parameters that characterize an Engel curve in the presence of both. We consider specifications where budget shares are polynomials in the logarithm of total expenditure, which is the case frequently encountered in empirical applications. We propose an estimation procedure which is an extension of that in Lewbel ( ) and exploits a control function assumption to correct for the endogeneity of the true unobserved total expenditure. Copyright © 2013 John Wiley & Sons, Ltd.