Ashley, Richard A.; Sun, Xiaojin - In: Econometrics : open access journal 4 (2016) 4, pp. 1-13
The two-step GMM estimators of Arellano and Bond (1991) and Blundell and Bond (1998) for dynamic panel data models have been widely used in empirical work; however, neither of them performs well in small samples with weak instruments. The continuous-updating GMM estimator proposed by Hansen,...