The Growing Importance of Family: Evidence from Brothers’ Earnings

We examine between‐brother correlation of earnings, family income, and wages from two cohorts of the National Longitudinal Surveys. Young brothers who entered the labor market in the 1970s had lower correlations of economic outcomes than did those who entered in the 1980s and early 1990s. Neither the rising brother correlation in education nor the rising return to schooling accounts for much of the increase in the brother correlation in earnings. These results suggest that family and community influences other than years of education that are shared by brothers have become increasingly important in determining economic outcomes.