The economic value of cultural diversity: evidence from US cities
发现1970-1990年间美国城市中外来人口比例上升与本地居民工资和房租上涨显著相关，且这种正效应在控制内生性后依然稳健，表明文化多样性对本地人生产力有净正面影响。
What are the economic consequences to U.S. natives of the growing diversity of American cities? Is their productivity or utility affected by cultural diversity as measured by diversity of countries of birth of U.S. residents? We document in this paper a very robust correlation: US-born citizens living in metropolitan areas where the share of foreign-born increased between 1970 and 1990, experienced a significant increase in their wage and in the rental price of their housing. Such finding is economically significant and survives omitted variable bias and endogeneity bias. As people and firms are mobile across cities in the long run we argue that, in equilibrium, these correlations are consistent with a net positive effect of cultural diversity on the productivity of natives. Copyright 2006, Oxford University Press.