【作者】 戴卓；

【Author】 Zhuo DAI College of Business,Jiujiang University,Jiujiang,Jiangxi Province P.R.China

【机构】 九江学院商学院；

【摘要】 本文首先探讨了动态面板一阶差分广义矩的估计,然后介绍了sargan检验的原理,接着采用蒙特卡洛模拟的方法研究了一阶差分广义矩法及相关方法的性质以及sargan检验的表现,最后,研究发现一阶差分广义矩法有个微小的下偏,而系统矩法则是无偏的,并且一阶差分广义矩法是进行sargan检验的好方法。更多还原

【Abstract】 Firstly,this paper studies the estimation of the first difference GMM of dynamic panel,and then introduces the theory of sargan test.Secondly,the nature of the first difference GMM and related methods and performance of sargan test are studied based on Monte Carlo simulation.Finally,this study finds the estimations of the first difference GMM have a slight bias,but the estimations of the system moment method are unbiased;the first difference GMM is a good method for sargan test.更多还原