The study sample will be randomized at the level of the health zone to either the ECD program or to the control group using stratified random sampling methods. Prior to randomization, basic demographic information will be collected on all health zones, including: distance to the study health center, total population, and number of eligible children ages 6 to 12 months. Next, zones will be stratified according to these demographic data. Finally, within strata zones will be assigned to either the ECD intervention or to the control group using a random number generator to achieve balance within strata.