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Modelling the evolution of a bipartite network - Peer referral in interlocking directorates

  • J Koskinen
  • Christofer Edling
Publishing year: 2012
Language: English
Pages: 309-322
Publication/Series: Social Networks
Volume: 34
Issue: 3
Document type: Journal article
Publisher: Elsevier

Abstract english

Abstract in Undetermined

A central part of relational ties between social actors is constituted by shared affiliations and events. The action of joint participation reinforces personal ties between social actors as well as mutually shared values and norms that in turn perpetuate the patterns of social action that define groups. Therefore the study of bipartitenetworks is central to social science. Furthermore, the dynamics of these processes suggests that bipartitenetworks should not be considered static structures but rather be studied over time. In order to model the evolution of bipartitenetworks empirically we introduce a class of models and a Bayesian inference scheme that extends previous stochastic actor-oriented models for unimodal graphs. Contemporary research on interlockingdirectorates provides an area of research in which it seems reasonable to apply the model. Specifically, we address the question of how tie formation, i.e. director recruitment, contributes to the structural properties of the interlockingdirectoratenetwork. For boards of directors on the Stockholm stock exchange we propose that a prolific mechanism in tie formation is that of peerreferral. The results indicate that such a mechanism is present, generating multiple interlocks between boards.


  • Sociology (excluding Social Work, Social Psychology and Social Anthropology)
  • sociologi
  • sociology


  • ISSN: 0378-8733
Christofer Edling
E-mail: christofer [dot] edling [at] soc [dot] lu [dot] se


Faculty of Social Sciences

+46 46 222 88 62



Centre for Economic Demography




+46 46 222 88 62




I earned my PhD from Stockholm University in 1999. Between 2002 and 2005 I was Torgny Segerstedt Pro Futura Fellow at the Swedish Collegium for Advanced Study at Uppsala University. I received my Docent-title in 2003, and was appointed Associate Professor at Stockholm University in 2004. From 2006 to 2008 I was Head of the Department of Sociology at Stockholm university. Before coming to Lund in 2012 I served as Full Professor of Sociology at Jacobs University, Bremen, Germany. I have been a fellow at Wissenschaftskolleg zu Berlin (2004/05) and Stellenbosch Institute for Advanced Study (2013).

Department of Sociology
Lund University
Visiting address: Sandgatan 11, House G, Lund
Postal address: Box 114 , SE-221 00 LUND, SWEDEN
Telephone: Student Office +46 46-222 88 44, Lund University Switchboard +46 46-222 00 00

Faculty of Social Sciences