题目：Political legitimacy and stability: the impact of earthquakes on conflict in historical China
白营，2015年毕业于香港科技大学社会科学部，获得博士学位，现为香港中文大学经济系助理教授。目前主要研究领域为发展经济学，经济史，和政治经济学。研究成果发表于Econometrica，Journal of the European Economic Association，Review of Economics and Statistics，Journal of Development Economics等国际知名学术期刊。
In historical China, because rulers ascribed their legitimacy to a heavenly mandate, natural calamities like earthquakes were seen as signs that the ruler's legitimacy had been weakened. I therefore proxy legitimacy shock by quake-induced minor shaking (i.e., strong enough to be felt by the population but too weak to cause material damage to persons or objects) and show that it causes significant political instability (as measured by conflict). This effect is much larger in regions with higher levels of ethnolinguistic fragmentation, suggesting that legitimacy shock can serve as a coordination device for overcoming the problems inherent in collective action.