Social Structure from Multiple Networks. I. Blockmodels of Roles and Positions

Harrison C. White, Scott A. Boorman, Ronald L. Breiger
1976 American Journal of Sociology  
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact . Networks of several distinct types of social tie are aggregated by a dual model that partitions a population while simultaneously identifying patterns of
more » ... ions. Concepts and algorithms are demonstrated in five case studies involving up to 100 persons and up to eight types of tie, over as many as 15 time periods. In each case the model identifies a concrete social structure. Role and position concepts are then identified and interpreted in terms of these new models of concrete social structure. Part II, to be published in the May issue of this Journal (Boorman and White 1976), will show how the operational meaning of role structures in small populations can be generated from the sociometric blockmodels of Part I. During the past decade, the network metaphor has become increasingly popular with social scientists; 2 it has even penetrated the conservative 730 AJS Volume 81 Number 4
doi:10.1086/226141 fatcat:jva5zgd7w5czvepxh4csbqinhi