Many studies use shift-share (or “Bartik”) instruments, which average a set of shocks with exposure share weights. We provide a new econometric framework for shift-share instrumental variable (SSIV) regressions in which identification follows from the quasi-random assignment of shocks, while...

Many studies use shift-share (or "Bartik") instruments, which average a set of shocks with exposure share weights. We provide a new econometric framework for such designs in which identification follows from the quasi-random assignment of shocks, allowing exposure shares to be endogenous. This...

On 9 december 2016, the upper house of Japan's parliament approved the Trans-Pacific Partnership (TPP). Prime Minister Shinzo Abe has pushed for the TPP's ratification despite US President Trump's decision to pull out the deal, insisting it would send a signal about Japan's continuing support to...