Longitudinal patterns of child development and socioeconomic status are described for a cohort of children in Madagascar who were surveyed when they were 3-6 and 7-10 years old. Substantial wealth gradients were found across multiple domains: receptive vocabulary, cognition, sustained attention,...

Longitudinal patterns of child development and socioeconomic status are described for a cohort of children in Madagascar who were surveyed when they were 3-6 and 7-10 years old. Substantial wealth gradients were found across multiple domains: receptive vocabulary, cognition, sustained attention,...

"Shared prosperity" has become a common phrase in the development policy discourse. This short paper provides its most widely used operational definition-the growth rate in the average income of the poorest 40 percent of a country's population-and describes its origins. The paper discusses how...