The traditional theory of demographic transition developed by Professor F.W. Notestein and his colleagues has occupied the center stage in the demographic literature for quite a long time. This theory was developed on the basis of the demographic experience of the developed world.

Most of us acquire knowledge regarding sex and sexuality, through various formal and informal avenues. Much of the information acquired through infornal sources is unlikely to be accurate or correct. Sex being a topic, which is not openly discussed is shrouded in secrecy.