UNDERSTANDING THE LONG‐RUN DECLINE IN INTERSTATE MIGRATION
分析了1991至2011年美国州际移民率长期下降的原因，发现职业回报的地理特异性降低以及工人迁移前获取信息的能力增强是主因，可解释至少一半的下降。
We analyze the secular decline in gross interstate migration in the United States from 1991 to 2011. We argue that migration fell because of a decline in the geographic specificity of returns to occupations, together with an increase in workers' ability to learn about other locations before moving. Micro data on earnings and occupations across space provide evidence for lower geographic specificity. Other explanations do not fit the data. A calibrated model formalizes the geographic specificity and information mechanisms and is consistent with cross‐sectional and time‐series evidence. Our mechanisms can explain at least half of the decline in migration.