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Why Overconfidence Kills Leadership Success (And How to Overcome It)
Episode 5331st July 2025 • The Mammoth in the Room • Nicolas Pokorny, PhD, MBA
00:00:00 00:09:56

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Overconfidence is often hailed as a strength in leadership, but what happens when that confidence blinds us to crucial risks? In today’s episode, we explore the dark side of overconfidence and its impact on leadership decisions. 


Using historical examples such as the Challenger disaster and the sinking of the Titanic, we’ll explore the dangers of unchecked certainty and the psychological forces at play that make this behavior so pervasive, even in the most capable individuals. 

Don’t let this evolutionary trait derail your leadership potential. Join me in this series as we break down how the illusion of control can skew your judgment in making decisions and affect your team’s success. 


In this episode:

- The Challenger disaster: a case study in overconfidence

- Additional historical examples of overconfidence

- The biology and psychology behind overconfidence

- Modern research findings on overconfidence

- Introduction of Mammoth Leadership Science courses & book



Order The Mammoth in the Room: https://mammothleadershipsciences.com/book/ 



Resources Used in the Episode: 


Moore, D. A., & Healy, P. J. (2008). The Trouble with Overconfidence. Psychological Review, 115(2), 502–517: https://healy.econ.ohio-state.edu/papers/Moore_Healy-TroubleWithOverconfidence.pdf 


Belmi, P., Neale, M. A., Reiff, D., & Ulfe, R. (2020). The Social Advantage of Miscalibrated Individuals. Journal of Personality and Social Psychology, 118(2), 254–282: https://www.apa.org/pubs/journals/releases/psp-pspi0000187.pdf


Dunning, D., & Kruger, J. (1999). Unskilled and Unaware of It. Journal of Personality and Social Psychology, 77(6), 1121–1134: https://www.researchgate.net/publication/12688660_Unskilled_and_Unaware_of_It_How_Difficulties_in_Recognizing_One's_Own_Incompetence_Lead_to_Inflated_Self-Assessments 

 

Ehrlinger, J., Mitchum, A. L., & Dweck, C. S. (2016). Understanding Overconfidence. Journal of Experimental Social Psychology, 63, 94–100: https://www.researchgate.net/publication/284086755_Understanding_overconfidence_Theories_of_intelligence_preferential_attention_and_distorted_self-assessment 


Trivers, R. (2011). The Folly of Fools: The Logic of Deceit and Self-Deception in Human Life. New York: Basic Books: https://psycnet.apa.org/record/2011-24018-000 


Vaughan, D. (1996). The Challenger Launch Decision: Risky Technology, Culture, and Deviance at NASA. University of Chicago Press: https://press.uchicago.edu/ucp/books/book/chicago/C/bo22781921.html 


Lord, W. (1955). A Night to Remember. New York: Holt: https://www.amazon.com/Night-Remember-Walter-Lord/dp/0030276152 


Roberts, A. (2014). Napoleon: A Life. New York: Viking Press: https://www.amazon.com/Napoleon-Life-Andrew-Roberts/dp/0143127853 




Get in Touch: 

Website: https://www.mammothleadershipsciences.com    

LinkedIn: https://www.linkedin.com/in/nicolaspokorny 

YouTube: www.youtube.com/@MammothLeadershipSciences  

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