Methods for strengthening a weak instrument in the case of a persistent treatment
M Berthélemy, P Bonev, D Dussaux… - Studies in Nonlinear …, 2019 - degruyter.com
When evaluating policy treatments that are persistent and endogenous, available
instrumental variables often exhibit more variation over time than the treatment variable. This
leads to a weak instrumental variable problem, resulting in high bias or uninformative
confidence intervals. We evaluate two new estimation approaches that strengthen the
instrument. We derive their theoretical properties and show in Monte Carlo simulations that
they outperform standard IV-estimators. We use our procedures to estimate the effect of …
instrumental variables often exhibit more variation over time than the treatment variable. This
leads to a weak instrumental variable problem, resulting in high bias or uninformative
confidence intervals. We evaluate two new estimation approaches that strengthen the
instrument. We derive their theoretical properties and show in Monte Carlo simulations that
they outperform standard IV-estimators. We use our procedures to estimate the effect of …
Methods for strengthening a weak instrument in the case of a persistent treatment
B Michel, P Bonev, D Damien… - Studies in Nonlinear …, 2019 - econpapers.repec.org
When evaluating policy treatments that are persistent and endogenous, available
instrumental variables often exhibit more variation over time than the treatment variable. This
leads to a weak instrumental variable problem, resulting in high bias or uninformative
confidence intervals. We evaluate two new estimation approaches that strengthen the
instrument. We derive their theoretical properties and show in Monte Carlo simulations that
they outperform standard IV-estimators. We use our procedures to estimate the effect of …
instrumental variables often exhibit more variation over time than the treatment variable. This
leads to a weak instrumental variable problem, resulting in high bias or uninformative
confidence intervals. We evaluate two new estimation approaches that strengthen the
instrument. We derive their theoretical properties and show in Monte Carlo simulations that
they outperform standard IV-estimators. We use our procedures to estimate the effect of …