DAVID EASTON’S SYSTEM THEORY politicalscienceshortnotes.blogspot.com/2019/06/david-eastons-system-theory.html
The system theory is an important theory in comparative politics. A system is defined as set of related units, which interact with each other on a continuous basis. The overall inter actions within the units of the system allows the system to function and an equilibrium is attained. David Easton is the first political thinker to use the system analysis to understand the political process. He has explained system theory in his book ‘A Framework for political analyses’. Easton defines political system as ‘a set of interaction as abstracted from the totality of the social behavior, through which values are authoritatively allocated for society. Easton said that any political system has two components -input and output. The input comprise of demand and support. Demand refers to a set of claims, desire, needs and wants made by the general public or a particular group before the government. The demand can be in form of appeals, agitations, elections etc.
Like demands there is also support mechanism that sustains the system. Supports refer to political obedience or values or ideologies or belief system that people have towards the system. The support mechanism provides legitimacy to the system. It may be symbol symbolic like waving the flag or singing National Anthem or substantial like attending political meeting or voting regularly.
Easton argues, out of the political system there exist another system that constitute the environment of the political system. This environment can be divided into two parts - intra societal and extra societal. The intra societal system includes economy, culture, social structure or personalities. These segments are the part of the society of which the political system is itself a part. They shape or influence the conditions under which a political system itself must operate. The extra societal system includes all the systems, which lie outside a given society. They are the component of emerging International society which may be called Supra society. The International political system and international economic systems would be in the category of extra societal system, which also shape political system of a society. 1/2