Emmanuel LAZEGA

Full professor, Sciences Po, Paris

Research Programs
Economic conducts : Firms

Emmanuel LAZEGA

Emmanuel Lazega focuses primarily on organizational and social networks analysis as a means to explain collective action, with the overarching aim of contributing to the development of a neo-structural sociology. His approach combines observation, modeling, correlation and comparison of the generic social processes of social life at the meso level, for instance particularistic solidarity and exclusion, collective socialization and learning processes, social control and conflict management and regulation and institutionalization, in order to better understand how the contemporary "organizational society" works.

E.Lazega developed this approach at two levels: intra- and inter-organizational. For example, he studied the different kinds of collective action among peers, with work on collegial organization and the links between bureaucracy and collegiality for lawyers, judges, researchers and priests, among others. He also conducted a study on cooperation between competitors, which looked at the simultaneous regulation of markets and the business world. This theoretical and analytical framework provides an insightful lens for looking at the shifting border between the public and private spheres and the way private actors are increasingly taking the place of public authorities in a number of areas of economic and social life.

A number of interdisciplinary collaborations are at the root of the development of this neo-structural approach, notably with network statisticians. Models also had to be developed in order to produce robust and reliable analyses of complex data, for example in the field of multi-level network dynamics. E.Lazega co-directs a research group on intra- and inter-organizational networks (, which aims to help PhD students and researchers maintain the methodological and technical skills necessary to carry out such analyses.

E.Lazega teaches the course in Organizational Sociology for second-year undergraduate students at Sciences Po, as well as a master's course called Capital relationnel et capital social (Relational and social capital).
At the PhD level, he co-teaches a seminar, which also functions as a public lecture series, called Réseaux et Régulation (Networks and Regulation).

Organizational Sociology, second-year undergraduate course at Sciences Po.

Capital relationnel et capital social (Relational and social capital), master's level course for the Master in Sociology at Sciences Po.

Professional activities

Co-director of the Intra- and inter-organizational networks research group (ORIO)
Co-teacher of the public seminar Réseaux et Régulation (Networks and Regulation) since 1996.
Member of the Programmatic Steering Board, Hague Institute on the Internationalization of Law.


Fellow of the European Academy of Sociology, since 2010.
Senior member of the Institut Universitaire de France, class of 2003.
Wiarda Award and Wiarda Chair Professor, Faculty of Law, Utrecht University, 2003-2004.

Post-doctoral fellow, then lecturer (1988-1991), Departments of Sociology at Yale University (1988-1991) and Columbia University (1988-1989).
Specialized in quantitative methods, intra- and inter-organizational network analysis and economic sociology.

Visiting graduate student and research assistant, Wolfson College, Centre for Socio-Legal Studies, Oxford University (1986-1988).
Specialized in sociology of professions.

Habilitation, University of Versailles, St-Quentin (1994). Coordinator: Alain Chenu.

PhD in economic and social sciences, University of Geneva (1988). Thesis advisor: Christian Lalive d'Epinay.

"Organized Mobility and Relational Turnover as Context for Social Mechanisms: A Dynamic Invariant at the Heart of Stability from Movement", January, 2017.

"Collegial Oligarchy and Networks of Normative Alignments in Transnational Institution Building: The Case of the European Unified Patent Court", Social Networks, n°48 (janvier 2017), p. 10-22., September 2016.

"Réseaux et régulation : pour un institutionnalisme néo-structural", Revue de la Régulation, July 2016.

"Joint ‘anormative’ regulation from status inconsistency: A multilevel spinning top model of specialized institutionalization", May, 2016.

"Effects of competition on collective learning in advice networks", Social Networks, May 2016.

"Organiser la concurrence sur un salon : soutien, discipline et laisser-faire", Presses des Mines, May, 2016.

"Stochastic block-models for multiplex networks: An application to a multilevel network of researchers", Journal of the Royal Statistical Society, April 2016.

"The Structural Wings of Matthew Effects: The Contribution of Three-Level Network Data to the Analysis of Cumulative Advantage", Methodological Innovation Online, March 2016.

Multilevel Network Analysis for the Social Sciences: Theory, Methods and Applications
"Multilevel Network Analysis for the Social Sciences: Theory, Methods and Applications", Springer, January 2016.

"Social selection models for multilevel networks", Social Networks, March 2015.

Financial logic and bankers’ institutional entrepreneurship: The “Zombies” debate in bankruptcy proceedings at the Commercial Court of Paris (2000-2005), October 2014.

Actualité de la recherche universitaire sur le Tribunal de commerce de Paris, September 2014.

Handling relationships in a market : relational structure of a trade fair for TV programs, June 2014.

Le monde des affaires dans l’appareil d’Etat: Le cas du Tribunal de Commerce de Paris (2000-2005), May 2014.

"‘Morphogenesis Unbound’ from the Dynamics of Multilevel Networks: A Neo-Structural Perspective", March, 2014.

"Appropriateness and Structure in Organizations: Secondary Socialization Through Dynamics of Advice Networks and Weak Culture", February, 2014.

"Sociologie néostructurale, disciplines sociales et systèmes complexes", February 2014.

Réseaux sociaux et structures relationnelles
Réseaux sociaux et structures relationnelles, Presses Universitaires de France, 2014.

Imposer une procédure de définition des prix sur un marché : le rôle des réseaux sociaux, November 2013.

Temps et espace : l’impact de la colocalisation temporaire des acteurs sur la morphologie de l'espace marchand. Une approche multiniveau, October 2013.

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