Longitudinal household data can have considerable advantages over much more widely used cross-sectional data. The collection of longitudinal data, however, may be difficult and expensive. One problem that has concerned many analysts is that sample attrition may make the interpretation of...

"Studies have shown that malnourished children in developing countries score lower on tests of cognitive function and fail to acquire fine motor skills at the normal rate. Do the effects of nourishment—good or bad—in early childhood linger into adolescence and adulthood, or do they fade away...

One of the major components of the PROGRESA program has been directed toward improving the nutritional status of small children in poor rural communities in Mexico. Results suggest that PROGRESA may be having fairly substantial effects on lifetime productivities and earnings of currently small...

Longitudinal household data can have considerable advantages over much more widely used cross-sectional data. The collection of longitudinal data, however, may be difficult and expensive. One problem that has concerned many analysts is that sample attrition may make the interpretation of...

"Early childhood nutrition is thought to have important effects on education, broadly defined to include various forms of learning. We advance beyond previous literature on early childhood nut ition on education in developing countries by (1) using unique longitudinal data from a nutritional...

One of the major components of the PROGRESA program has been directed toward improving the nutritional status of small children in poor rural communities in Mexico. Results suggest that PROGRESA may be having fairly substantial effects on lifetime productivities and earnings of currently small...

"Most investigations into the importance and determinants of adult cognitive skills assume that (1) they are produced primarily by schooling, and (2) schooling is statistically predetermined or exogenous. This study uses longitudinal data collected in Guatemala over 35 years to investigate...

"Many prior studies find significant cross-sectional positive ordinary least squares (OLS) associations between maternal human capital (usually maternal schooling attainment) and children's human capital (usually children's schooling, but in some cases children's nutritional status). This paper...

Impact evaluations aim to measure the outcomes that can be attributed to a specific policy or intervention. While there have been excellent reviews of the different methods for estimating impact, insufficient attention has been paid to questions related to timing: How long after a program has...