THE EFFECTS ON EARNINGS OF INTERREGIONAL AND INTERINDUSTRY MIGRATION*
利用美国社会保障局1971和1973年的微观数据，研究跨区域和跨行业迁移决策对收入的影响，发现迁移者存在自选择效应和比较优势。
"The purpose of this study is to examine a model of the decision to migrate between regions and/or industries and its effect on earnings. The study is based on a large set of individual microdata taken from the [U.S.] Social Security Administration's One Percent Continuous Work History Sample." The data are for 1971 and 1973. "Results of estimation provide strong support for the hypothesis of self-selection among region and industry migrants. Additional empirical evidence supports the notion of comparative advantage in migrant earnings, implying that earnings distributions of individuals who made a particular combination of migration decisions may differ from those of the population as a whole."