RT Journal Article SR Electronic T1 Intergenerational Economic Mobility in the United States, 1940 to 2000 JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 139 OP 172 DO 10.3368/jhr.43.1.139 VO 43 IS 1 A1 Aaronson, Daniel A1 Mazumder, Bhashkar YR 2008 UL http://jhr.uwpress.org/content/43/1/139.abstract AB We estimate trends in intergenerational economic mobility by matching men in the Census to synthetic parents in the prior generation. We find that mobility increased from 1950 to 1980 but has declined sharply since 1980. While our estimator places greater weight on location effects than the standard intergenerational coefficient, the size of the bias appears to be small. Our preferred results suggest that earnings are regressing to the mean more slowly now than at any time since World War II, causing economic differences between families to become more persistent. However, current rates of positional mobility appear historically normal.