In this study, I have culled from various sources almost all the comparable data for cephalic index of different population groups living in different parts of India and have attempted to show that contrary to the general impression "brachycephalization is a universal process" is not a universal phenomena because in my study, every two population out of three groups have increasing head forms in the course of one, two or three generations. So it can not be concluded as a general conclusion about it and can be treated as a hypothesis and needs further research, which will be the most...