This paper provides new evidence of sharp differences in cognitive development by socioeconomic status in early childhood for five Latin American countries using a common measure of receptive language ability. We find important differences in development in early childhood across countries and...

We examine the relationship between early cognitive development, socioeconomic status (SES), child health, and parenting quality in a developing country. We use a sample of more than 3,000 predominantly poor preschool-aged children from Ecuador, and analyze determinants of their scores on a...