Research from the United States shows that gaps in early cognitive and non-cognitive ability appear early in the life cycle. Little is known about this important question for developing countries. This paper provides new evidence of sharp differences in cognitive development by socioeconomic...

"Paxson and Schady examine the relationship between early cognitive development, socioeconomic status, child health, and parenting quality in a developing country. They use a sample of over 3,000 predominantly poor pre-school age children from Ecuador and analyze determinants of their scores on...