This is contrary to the results of the evaluation of the Colombian CCT Familias enAccion, whose contribution to an increase in the long term nutritional status of 0-24 month-old children (measured by the height-for-age score) has been substantial (Attanasio et al., A recent work by Rosado et al. ( More specific information is provided by short case studies of programmes whose characteristics seem to have maximized the impact on children.