We consider instrumental variables (IV) regression in a setting with many (possibly weak)instruments. In finite samples, the inclusion of an excessive number of moments may increasethe bias of IV estimators. We propose a Jackknife instrumental variables estimator (RJIVE) combined with...

We consider modeling the real exchange rate by a stationary three-regime self-exciting threshold autoregressive (SETAR) model with possibly a unit root in the middle regime. This representation is consistent with purchasing power parity in the presence of trading costs. Our main contribution is...