Intergenerational Occupational Mobility in Great Britain and the United States Since 1850: Comment
重新分析Long和Ferrie的数据，发现代际职业地位关联在时间和地点上相似，但1880年美国农场对非农背景者更开放，1881年英国代际相关性最强，结构性流动在1970年代美国影响最大。
We reanalyze Long and Ferrie's data. We find that the association of occupational status across generations was quite similar over time and place. Two significant differences were: (i) American farms in 1880 were far more open to men who had nonfarm backgrounds than were American farms in 1973 or British farms in either century; (ii) of the four cases, the intergenerational correlation was strongest in Britain in 1881. Structural mobility related to, among other things, economic growth and occupational differentiation, affected mobility most in 1970s America.