terms of growth. Included are case studies from seven countries in the region: Argentina, Brazil, Ecuador, Guatemala, Peru …

a rich data set from rural Guatemala that can account for such unobservable factors. A 10 percent increase in maternal … Raven's scores increase children's Raven's scores by 7.8 percent. A 10 percent increase in maternal reading and vocabulary … skills increases children's score on a standard vocabulary test by 5 percent. Effects are larger for older children, and the …