Unfortunately there’s little reason to believe that’s due to treatment rather than selection. Smart people both get more education and make more money, but the

Unfortunately there’s little reason to believe that’s due to treatment rather than selection. Smart people both get more education and make more money, but the impact of education on income is mostly mediated by intelligence, not education. Otherwise the long project to get more and more people into university would have had more drastic effects on incomes rather than diminishing the usefulness of a university education as a signal of a certain minimum level of intelligence. > Herrnstein's Syllogism: Genetic and Shared Environmental Influences on IQ, Education, and Income. > Environmental influences due to a common shared environmental factor were 0.23 for IQ, 0.18 for education, and 0.08 for income. The model predicted a correlation of 0.63 between IQ and education and 0.34 between IQ and income. Sixty-eight percent of the former and 59% of the latter was genetically mediated; the remainder was mediated by common shared environment.