Incentives are essential to promote labor productivity. We implemented a two-stage field experiment to measure effects of career and wage incentives on productivity through self-selection and causal effect channels. First, workers were hired with either career or wage incentives. After...

Scholars may become journal editors because editors may generate more citations of their own works. This paper empirically establishes that a scholar's publications are more likely to be cited by papers in a journal that is edited by the scholar. We then test if editors exercise influence on...

The Medicaid coverage “cliff” occurs when Medicare beneficiaries with household income exceeding 100% of the federal poverty level lose eligibility for supplemental Medicaid coverage. Using a regression discontinuity design, we demonstrate that the cliff decreases the number of emergency...

We empirically test the economic impacts of the introduction of the Korean high speed rail system, the Korea Train Express (KTX), in 2004. For analysis, we use nighttime light data from satellite observations as a proxy for local economic activity and construct a 20-year panel data set at the...