for change in the system. The western societies witnessed relatively longer time-span for their development and were able to adjust their behaviour gradually to the desired patterns. Overlapping, than the contemporary transitional or developing societies. Generally, in a prismatic society the pressure for change comes from both internal and external sources. If pressure is primarily external (foreign technical assistance programmer),it may be called ‘exogeneous’ change and if the pressures are primarily internal (normally by administrative reforms) it may be called ‘endogenous’ change. And if the change is the result fo both external and internal pressures, it is termed as ‘equi-genetic’. Riggs explained the dilemma of change in the manner that the more exogenetic the process of diffraction, the more formalistic and heterogeneous its prismatic phase; the more endogenetic, the less formalistic and heterogeneous. Thus, greater the formalism, heterogeneity and overlapping, greater