After discussing a general modular paradigm of population education consisting of curriculum building, system building and diffusion process, the relevant researches from behavioural sciences are reviewed. These researches relate to socio-economic status and religion, family structure variables, community and culture. Researches in the field of cognitive development, student attitudes and motivation, family life and family planning are also discussed. Studies on teacher attitude and their family planing behaviour, teaching methods, tribal education and diffusion process are included. Reviewing of these researches, the current status of population education and its future needs are suggested.