In social sciences, a cross-cutting cleavage exists when groups on one cleavage overlap among groups on another cleavage. "Cleavages" may include racial, political, religious divisions in society. Formally, members of a group j on a given cleavage x belong to groups on a second cleavage y with members of other groups k, l, m, etc. from the first cleavage x. For example, if a society contained two ethnic groups that had equal proportions of rich and poor it would be cross-cutting. While the concept may have been around since antiquity the formalizing of it originated with James Madison in The Federalist, Number 10. Robert A. Dahl built a theory of Pluralist democracy which is a direct descendant of Madison's cross-cutting cleavages. The term's antonym is reinforcing cleavages", which would be the case of one of the ethnic groups being all rich and the other all poor. The term originates from Simmel (1908) in his work Soziologie. Definition In social sciences, a cross-cutting cleavage exists when groups on one cleavage overlap among groups on another cleavage. "Cleavages" may include racial, political, religious divisions in society. Formally, members of a group j on a given cleavage x belong to groups on a second cleavage y with members of other groups k, l, m, etc. from the first cleavage x. For example, if a society contained two ethnic groups that had equal proportions of rich and poor it would be cross-cutting. The term's antonym is "reinforcing cleavages", which would be the case of one of the ethnic groups being all rich and the other all poor. The term originates from Simmel (1908) in his work Soziologie. History Anthropologists used the term heavily in the first few decades of the 20th century, as they brought back descriptions of non-Western societies throughout Asia and Africa. Sociologists have used the term, especially in the sub-field of Macro Sociology. Peter Blau's work is the most well-known. The concept of cross-cutting cleavages is perhaps most heavily used in the field of Political Science. Cross-cutting cleavages were originally suggested as a mechanism for political stability, as no group can align all its members along a uniform cleavage-based platform, but rather has to appeal to members of the group that are spread throughout the groups created by other cleavages. The most in-depth discussion of this process is that by Seymour Martin Lipset in his 1960 book Political Man. Stein Rokkan