Olivier Sibony
Olivier Sibony | |
|---|---|
| Born | 1967 Paris, France |
| Occupation(s) | Scholar, writer, professor |
| Years active | 1991–present |
| Known for | Behavioral strategy, heuristics, cognitive biases, strategic decision-making |
| Notable work | Noise: A Flaw in Human Judgment; You're About to Make a Terrible Mistake |
Olivier Sibony (born 1967) is a French scholar and writer whose expertise lies in behavioral strategy, with a particular emphasis on heuristics, cognitive biases, and enhancing the quality of strategic decision-making. He co-wrote the New York Times best-seller Noise: A Flaw in Human Judgment alongside Daniel Kahneman and Cass R. Sunstein.
Currently, Sibony holds a professorship in strategy and management at HEC Paris, where he was honored with the Vernimmen Prize for outstanding teaching in 2020. Additionally, he serves as an Associate Fellow at the Saïd Business School of University of Oxford.
Early life and education
A native of Paris, Sibony completed his studies at HEC Paris in 1988 following preparatory coursework at Lycée Carnot. He later achieved a doctorate from Université Paris Dauphine in 2017, presenting a dissertation titled "Understanding and preventing error in strategic decision processes: the contribution of behavioral strategy."
Career
Sibony’s professional journey includes a tenure at McKinsey & Company from 1991 until 2015, during which he advanced to partner in 1997 and then senior partner in 2004. Since 2015, he has been a faculty member in the Strategy department at HEC Paris, while continuing his association with Oxford’s Said Business School.
In recognition of his societal contributions to France, he was named a Knight of the Legion of Honour in 2017.
Research
The core of Sibony’s research applies principles from judgment and decision-making science to business strategy—a domain he has significantly shaped under the term "Behavioral Strategy." His work extensively explores how cognitive biases influence strategic choices and develops approaches to detect and counteract these biases.
He underscores the dangers cognitive biases pose to effective strategic decisions and promotes frameworks that safeguard decision-making integrity. In his publication You’re about to make a terrible mistake], Sibony introduces the concept of decision architecture, which entails structuring decision-making processes to diminish susceptibility to bias. Subsequently, he advances the idea of decision hygiene, encompassing practices aimed at reducing both bias and noise—random fluctuations in judgment—by implementing deliberate tools such as checklists, premortem analyses, and formalized procedures. He further recommends conducting noise audits and employing independent assessments to prevent excessive dependence on individual expert opinions. Sibony contends that organizations ought to apply comparable discipline and accountability to strategic decisions as they do to operational or financial functions. His insights have been published in leading business outlets including Harvard Business Review, Sloan Management Review, California Management Review, and McKinsey Quarterly.
Beginning in 2025, Sibony has questioned prevailing beliefs linking corporate diversity directly to performance outcomes. He emphasizes that cognitive diversity—the presence of varied mental frameworks and problem-solving styles—is essential for improving decision quality. He critiques assumptions that diversity inherently leads to better results, cautioning that without intentional design and management of group dynamics, diverse teams might underperform. Moreover, he highlights diversity and inclusion’s ethical importance as foundational values.
While recognizing stereotypes and endorsing quantitative targets as useful tools, Sibony leverages behavioral science insights to advocate for structured decision-making processes that reduce conformity pressures and foster constructive dissent. His research seeks to harmonize inclusion objectives with organizational performance by offering evidence-based models for selecting, integrating, and leading teams characterized by cognitive diversity.
Books
- Kahneman, D., Sibony, O., and Sunstein, C. (2021). Noise: A Flaw in Human Judgment. New York: Little Brown Spark.
- Sibony, O. (2020). You're About to Make a Terrible Mistake: How Biases Distort Decision-Making and What You Can Do to Fight Them. New York: Little, Brown Spark.
- Garrette, B., Phelps, C., and Sibony, O. (2018). The Most Important Skill You Never Learned, featured in Cracked It!, Springer International Publishing.
- Sibony, O. (2021). Trouvez-moi la solution ! Les méthodes de résolution de problèmes des meilleurs consultants en stratégie. Paris: Flammarion.
- Sibony, O. (2020). Vous allez redécouvrir le management ! 40 clés scientifiques pour prendre de meilleures décisions. Paris: Flammarion.
- Garrette, B., Lehmann-Ortega, L., Leroy, F., Dussauge, P., Durand, R., Pointeau, B., and Sibony, O. (2019). STRATEGOR. Toute la stratégie de la start-up à la multinationale (8th edition).
Articles in the Popular Press
- Kahneman, D., Sibony, O., and Sunstein, C. (18 May 2021). "To Achieve a Fairer Society, We Must First Eliminate ‘Noise’." New York Times.
- Sibony, O. (25 April 2020). "Whether Experts, Decision-Makers or Observers, We Are All Influenced by Cognitive Biases." Le Monde.
- Sibony, O. (19 March 2020; updated 20 April 2020). "How Could We Have Been So Blind? The Biases That Delayed Our Awareness of the Virus." Philonomist.