Expertise

My research focuses on legitimacy and legitimation in contested and ambiguous environments. I examine how audiences evaluate organizations and entrepreneurial ventures in the grey area between legitimacy and illegitimacy, why legitimacy judgments vary across evaluators and contexts, and how these judgments shape entrepreneurial outcomes, organizational growth, and socioeconomic inequality.

My work advances legitimacy theory beyond binary classifications by developing a more differentiated understanding of intermediate legitimacy states and the processes through which legitimacy is granted, withheld, and revised. I also extend this research to entrepreneurship, including female and minority entrepreneurship, examining how evaluative processes shape opportunity and inequality.

Methodologically, I use experiments and mixed methods designs combining experiments, interviews, quantitative text analysis and archival data.

Engagements

Media availability
Expert availability
Research

Links

Honors

Nomination for the best paper award
Awarded, Diversity, Equality & Inclusion and Entrepreneurship, 2023
Best paper proceeding
Awarded, Babson College Entrepreneurship Research Conference (BCERC), 2019
Best paper proceeding
Awarded, ENT Division, Academy of Management (AOM), 2017

Organizational Affiliations

Assistant Professor, Department of Innovation & Entrepreneurship, emlyon business school

Primary member, InvEnt - Entrepreneurship and Innovation, emlyon business school

Affiliated member, STORM - Strategy and Organization, emlyon business school

Assistant Professor, University of Essex (United Kingdom, Colchester)

Highlights - Contribution

Journal article

by Julia ThalerMartin SievertSonia S. SIRAZ and Alexander Pinz

First online publication 10/03/2026

Journal of Management Studies

Journal article

by Sonia S. SirazBjörn ClaesDeycy J. Sanchez Preciado and Nicholas Theodorakopoulos

Published 01/10/2025

Journal of Management Inquiry, 34, 4, 416 - 438

Journal article

by Björn ClaesSonia S. SirazJulio de Castro and Eléanor Maéva Lapeyre

Published 01/03/2025

European Management Review, 22, 1, 202 - 217

Journal article

by Sonia S. SirazBjörn ClaesJulio de Castro and Eero Vaara

Published 01/06/2023

Journal of Management Studies, 60, 4, 924 - 962

Education

Entrepreneurship and Organization Theory
PhD

I.E. Business School of Madrid, Spain

Research Methods
Master's degree

I.E. Business School of Madrid, Spain

International Business
Master's degree

Kedge Business School, Bordeaux, France

European Union and International Business Law
Master's degree

Université Bordeaux 4 Montesquieu, France