Wages in America differ greatly among workers. Why is that? One reason includes differences in human capital — tools of the mind. Education is one of the biggest investments people make to increase their human capital. Which college majors offer the greatest returns? And are all returns on education due to human capital? A college degree can “signal” other factors as well, and we discuss what is commonly known as the “sheepskin effect.” In this video, we also discuss how globalization has affected wages in the U.S.

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