Contrasting accounts of the common structure in the blockmodels for two community elites (Breiger and Pattison, 1978; McConaghy, 1980) are shown to follow from two distinct means of interpreting the semigroup representation of role structure in a single population. The two candidate sets of...

Blockmodel analysis offers a perspective for developing operational theories of role interlock across multiple networks. We identify precisely those features of role interlock that are shared by the elites of two small cities. This joint role structure is then interpreted with the aid of an...