Finite sample properties of the two-step empirical likelihood estimator

We investigate the finite sample properties of two-step empirical likelihood ( EL) estimators. These estimators are shown to have the same third-order bias properties as EL itself. The Monte Carlo study provides evidence that ( i) higher order asymptotics fails to provide a good approximation in the sense that the bias of the two-step EL estimators can be substantial and sensitive to the number of moment restrictions and ( ii) the two-step EL estimators may have heavy tails.