This paper provides a summary of the work in seven papers of a Latin American Research Network project intended to identify the following information. The private and public determinants of child anthropometrics; The extent to which the private and public determinants interact and whether interactions suggest gross substitution or complementarities; and The extent to which the influence of the determinants of child anthropometrics vary by the age and gender of the child. Countries for which results are reported included in the project are Argentina, Bolivia, Brazil, Colombia, Ecuador, Honduras, Mexico and Nicaragua.