We develop a theoretical model of mating behavior and parental investment in children under asymmetry in kin recognition between men and women that provides a microfoundation for the institution of marriage. In the model, men and women derive utility from consumption and reproductive success,...

This paper shows that there are large differences in cognitive and socio-emotional development between children from rich and poor backgrounds at the age of 3, and that this gap widens by the age of 5. Children from poor backgrounds also face much less advantageous "early childhood caring...