Those least likely to go benefit most from college

A "Quick Take" in today's Inside Higher Ed alerted me to this study due to be published in the April issue of American Sociological Review. You can see a pre-print here.
"The economic value of a college degree is nearly twice as high for women from disadvantaged backgrounds as for women from privileged backgrounds, the study says. For disadvantaged men, a college education is worth three times more than is the case for privileged college-goers." (from Inside Higher Ed). There are undoubtedly confounding factors, the authors suggest, such as high motivation levels among those who overcome the hurdles presented when "college is not a culturally expected outcome" (Brand & Xie, 2010, p. 32)