Semiparametric estimation of lifetime equivalence scales
用半参数方法估计生命周期等价尺度，仅对家庭间当期支出差异施加参数结构，并用加拿大数据检验限制条件，发现与参数方法结果相近且第一、二胎成本相等。
Abstract Pashardes ( 1991 ) and Banks et al. ( 1994 ) use parametric methods to estimate lifetime equivalence scales. Their approaches put parametric restrictions on the differences in within‐period expenditure needs across household types, the intertemporal allocation of expenditure, and the shapes of commodity demand equations. This paper puts parametric structure only on the differences in within‐period expenditure needs across household types. This implies structure on the intertemporal allocation of expenditure, but leaves the shapes of commodity demand equations unrestricted. Semiparametric methods are used to estimate within‐period and lifetime equivalence scales with Canadian expenditure data, and to test the restrictions imposed on within‐period expenditure functions. Estimated lifetime equivalence scales are similar in size to those estimated by Banks et al. ( 1994 ) and exhibit equal lifetime costs for first and second children. Copyright © 2005 John Wiley & Sons, Ltd.