Hahn, Jinyong; Hausman, Jerry; Kuersteiner, Guido - Department of Economics, Boston University - 2005
dynamic panel model. We also show that under the weak instrument approximation such conventional estimators are dominated in … and mean squared error properties even when identi.cation of the model becomes weak near the unit circle. We adopt a weak … instrument asymptotic approximation to study the behavior of various estimators near the unit circle. We show that an estimator …