In 1994, an experiment was launched by the Navrongo Health Research Centre that will test the demographic impact of community health and family planning services in a rural, traditional area of northern Ghana. While exhaustive social research has been directed to clarifying societal constraints to reproductive change, relatively little is known about how African cultural characteristics can be a resource to family planning programs. This study will clarify ways in which cultural resources of a traditional African society can be used in efforts to foster reproductive change. This article reviews characteristics of the study population, the design of the Navrongo experiment, and the research plan. The Navrongo Project will be the first African experimental trial of the demographic impact of family planning.