Changes in breastfeeding practices are affecting the health and survival of millions of Third World Children and the fertlity of their mothers. Yet, there is little detailed information on current breastfeeding practices or the determinants of feeding choices. This study attempts to create a framework for understanding the practices of mothers in certain developing countries and hence, designing culturally appropriate information programs that will enable mothers to make better feeding choices. Based on research conducted by international study teams, it focuses on the factors that determine feeding practices in four Third World cities.