18 Oct
2023
Trading Social Status for Genetics in Marriage Markets: Evidence From Great Britain and Norway
Under social-genetic assortative mating (SGAM), socio-economic status (SES) and genetically inherited traits are both assets in marriage markets, become associated in spouse pairs, and are passed together to future generations. This gives a new explanation for persistent intergenerational inequality and observed genetic differences between rich and poor. We model SGAM and test for it in large surveys in two countries. Spouses of earlier-born siblings have genetics predicting more education. This effect is mediated by individuals' own education and income. Thus, shocks to SES are reflected in the DNA of subsequent generations. Under SGAM, genetic variation is endogenous to economic institutions.