In the United States and other western nations, debates rage over
whether welfare, medical care, educational programs, and many other
aspects of public policy should be the responsibility of central govern-
ment, local government, or the private sector. In most nations, the
issues of regional autonomy and decentralization are constantly in the
news, with intensity varying from mild debate to open warfare. Less
visibly, battles are continuously fought in the political arena over
what groups should have the right to make decisions concerning the
allocation of soci- ety's resources. In response to these concerns,
social scientists have focused consider- able attention on the causes
and consequences of centralization and de- centralization in political,
economic, and social organizations. Their analyses of centralization
have been varied, ranging from systems that are quite small (e. g., the
family, the firm, and the community) to those sys- tems that are very
large (e . g., the welfare state). While centralization is a concept of
major concern in most of the social science disciplines, each discipline
has tended to focus on centralization with a different set of interests.
Economists have been very much concerned with the causes and the
consequences of the concentration of economic resources. Polit- ical
scientists have long sought to understand the origins and conse- quences
of dictatorship and democracy. Sociologists have focused on inequalities
in the distribution of power.