Associate Professor of Managing People in Organizations

• Ph.D. and M.S. in Organizational Behavior, Haas School of Business at the University of California, Berkeley
• B.S. in Psychology from Tufts University

Sebastien Brion is an Associate Professor of Managing People in Organizations at IESE Business School. He holds a Ph.D. in Organizational Behavior from the Haas School of Business, University of California, Berkeley. In his research, Professor Brion explores the psychological effects of power, focusing on the attainment, maintenance, and loss of power in group and organizational settings. His dissertation explored how biases in the way that powerful individuals perceive their alliances with others contribute to the loss of power. In addition, he has explored the impact of overconfidence on leadership, investigating the critical distinction between leadership emergence and leadership effectiveness. Professor Brion’s research has been highlighted in numerous publications, including The Economist, Le Monde, DieWelt, and Valor Económico.

At IESE, Professor Brion teaches core classes on Leadership and Human Resources Management, and electives on Power and Influence, at the MBA and Executive level. Professor Brion has taught in executive programs for firms such as L’Oreal, Santander, Nissan, NLNG (Lagos, Nigeria), and Kazakhstan Temir Zholy (National Railways of Kazakhstan). In addition, he has held a Visiting Professor position at the Tuck School of Business at Dartmouth College and has taught in executive program s for the Haas School of Business and MDE (Abidjan, Côte d?Ivoire).

As part of his professional activities Professor Brion has conducted research and consulting projects in the human resources and social media industries.

Areas of interest

* Power and Influence
* Alliance and Coalition Formation
* Groups and Teams
* Accuracy and Bias in Interpersonal Perception


Journal Articles (refereed)

LOUNT, R., DOYLE, S., BRION, S., PETTIT, N. C. (2019). Only When Others Are Watching: The Contingent Efforts of High Status Group Members. Management Science, 65 (7), 3382 - 3397. doi:10.1287/mnsc.2018.3103.
BRION, S., MO, R., LOUNT JR., R. B. (2019). Dynamic Influences of Power on Trust: Changes in Power Affect Trust in Others. Journal of Trust Research, 9 (1), 6 - 27. doi:10.1080/21515581.2018.1552591.
BRION, S., LOUNT, R., DOYLE, S. (2015). Knowing If You Are Trusted: Does Meta-Accuracy Promote Trust Development? Social Psychological and Personality Science, 6 (7), 823 - 830. doi:10.1177/1948550615590200.
ANDERSON, C. P., BRION, S. (2014). Perspectives on Power in Organizations. Annual Review of Organizational Psychology and Organizational Behavior, 1, 67 - 97. doi:10.1146/annurev-orgpsych-031413-091259.
KÁGANER, E., GIORDANO, G., BRION, S., TORTORIELLO, M. (2013). Media Tablets for Mobile Learning. Communications of the ACM, 56 (11), 68 - 75. doi:10.1145/2500494.
BRION, S., ANDERSON, C. P. (2013). The Loss of Power. How Illusions of Alliance Contribute to Powerholders' Downfall. Organizational Behavior and Human Decision Processes, 121 (1), 129 - 139. doi:10.1016/j.obhdp.2013.01.005.
ANDERSON, C. P., BRION, S., MOORE, D. A., KENNEDY, J. A. (2012). A Status-Enhancement Account of Overconfidence. Journal of Personality and Social Psychology, 103 (4), 718 - 735. doi:10.1037/a0029395.
MADDOX, K. B., RAPP, D. N., BRION, S., TAYLOR, H. A. (2008). Social Influences on Spatial Memory. Memory & Cognition, 36 (3), 479 - 494. doi:10.3758/MC.36.3.479.
BRION, S., AUDIA, P. G. (2007). Reluctant to Change: Self-Enhancing Responses to Diverging Performance Measures. Organizational Behavior and Human Decision Processes, 102 (2), 255 - 269. doi:10.1016/j.obhdp.2006.01.007.
OVERBECK, J. R., TIEDENS, L. Z., BRION, S. (2006). The Powerful Want to, the Powerless Have to. Perceived Constraint Moderates Causal Attributions. European Journal of Social Psychology, 36 (4), 479 - 496. doi:10.1002/ejsp.353.

Articles in other publications

BRION, S. (2014). How Helping Others Can Get You To The Top. Forbes.
BRION, S. (2013). Think You Have Power? Check Your Perceptions. Deciding Your Fate. IESE Insight (19), pp. 31 - 38.
BRION, S. (2013). Cómo lograr autoridad y no perderla. La psicología del poder. IESE Insight (19), pp. 31 - 38.

Book Chapters

BRION, S., AUDIA, P. G., GREVE, H. (2015). Self-Assessment, Self-Enhancement, and the Choice of Comparison Organizations for Evaluating Organizational Performance. In Giovanni Gavetti, William Ocasio (Eds.), Cognition and Strategy (pp. 89 - 118). Bingley [etc.]: Emerald Group Publishing Limited.


DELONCA, E., BRION, S. (2017). A Sacred Spirits Dilemma (A). IESE, DPO-399-E.
DELONCA, E., BRION, S. (2017). A Sacred Spirits Dilemma (B). IESE, DPO-400-E.

Technical Notes

MILLER, M., BRION, S. (2019). Erroneous Cues of Leadership: Implications for Leadership Emergence and Leadership Selection. IESE, DPON-153-E.