研究生workshop由首都经济贸易大学国际经济管理学院主办。主要内容：一是研究生报告前沿或经典文献，二是研究生报告自己的研究或研究设想。论坛宗旨是：为学院师生搭建一个学术交流平台，营造浓厚学术氛围；通过对经典论著或前沿文献的研讨，拓宽研究生的理论视野，提升研究生的前沿方法运用能力，帮助研究生提高论文写作质量。

 

本期workshop

 

报告人：丘锦波（博士二年级）

导师：李委明，杨欣桐

报告题目：《Inequality and Growth: Why Differential Fertility Matters》，American Economic Review， 2003

 

报告摘要：

　　We develop a new theoretical link between inequality and growth. In our model, fertility and education decisions are interdependent. Poor parents decide to have many children and invest little in education. A mean-preserving spread in the income distribution increases the fertility differential between the rich and the poor, which implies that more weight gets placed on families who provide little education. Consequently, an increase in inequality lowers average education and, therefore, growth. We find that this fertility-differential effect accounts for most of the empirical relationship between inequality and growth.

　　我们提出了一种新的不平等与经济增长之间的理论联系。在我们的模型中，生育和教育决策是相互关联的。贫困家庭倾向于生育更多的子女，并很少投资于教育。在收入分配中出现一种保持均值的扩散会增加富人和穷人之间的生育差异，这意味着更多的权重被放在那些提供较少教育的家庭上。因此，不平等程度的增加降低了平均教育水平，从而影响了经济增长。我们发现，这种生育差异效应解释了不平等与经济增长之间的大部分实证关系。

 

报告人：温新娇（博士二年级）

导师：杨欣桐

报告题目：《Optimal Spatial Policies, Geography, and Sorting》，The Quarterly Journal of Economics，2020

报告摘要：

　　We study optimal spatial policies in a quantitative trade and geography framework with spillovers and spatial sorting of heterogeneous workers. We characterize the spatial transfers that must hold in efficient allocations, as well as labor subsidies that can implement them. There exists scope for welfare-enhancing spatial policies even when spillovers are common across locations. Using data on U.S. cities and existing estimates of the spillover elasticities, we find that the U.S. economy would benefit from a reallocation of workers to currently low-wage cities. The optimal allocation features a greater share of high-skill workers in smaller cities relative to the observed allocation. Inefficient sorting may lead to substantial welfare costs.

　　我们研究了在一个涉及溢出效应和异质工人的定量贸易与地理框架中最优的空间政策。我们对有效分配中必须存在的空间转移以及可以实施它们的劳动力补贴进行了描述。即使溢出效应在不同地区普遍存在，仍然存在改善福利的空间政策的空间。利用美国城市的数据和现有的溢出弹性估计，我们发现将劳动力重新分配到目前低工资城市将有益于美国经济。最优的分配中，与观察到的分配相比，较小的城市将拥有更多的高技能工人。低效的排序可能导致相当大的福利成本。