We report robust evidence of adverse cross-border externalities from terrorism on trade for over 160 countries from 1976 to 2014. Terrorism in one country spills over to reduce trade in neighboring nations. These externalities arise from higher trade costs due to trade delays and macroeconomic...

Recently, there has been much discussion about replicability and credibility. By integrating the full research record, increasing statistical power, reducing bias and enhancing credibility, meta-analysis is widely regarded as 'best evidence'. Through Monte Carlo simulation, closely calibrated on...

We investigate whether estimates of the effect of aid on growth are influenced by authors' careers. We collect data on the careers of 190 authors and apply meta-regression analysis to investigate the impact of authors' age and tenure status on the reported magnitude of aid effectiveness, and on...

We investigate the impact of health aid on infant mortality conditional on the quality of governance in 96 recipient countries. Our analysis applies the long difference estimator and instrumental variable estimation, with aid instrumented by donor government fractionalization interacted with the...

This paper offers a meta-regression analysis of the literature on the drivers of financial development. Our results based on 1900 estimates suggest that institutional quality is positively correlated to both private sector credit and stock market capitalization (both as share of GDP). Domestic...

The social sciences face a replicability crisis. A key determinant of replication success is statistical power. We assess the power of political science research by collating over 16,000 hypothesis tests from about 2,000 articles. Using generous assumptions, we find that the median analysis has...