Communication planning in developing countries is discussed in individual articles on theory, knowledge production and utilization, planning at the regional level, software, and rural development. A nutrition education project and three experiments in developing educational materials with feedback from villagers in Africa are described in the…

The keynote article in this issue describes some empirically demonstrated beneficial functions of radio in development communications: (1) it improves the quality and relevance of education; (2) it keeps educational costs down; (3) it broadens access to education; and (4) it extends the impact of time, money, and effort outside the formal…