# Inventor Perseverance after Being Told to Quit : The Role of Cognitive Biases

Abstract : We find that approximately one third (29%) of independent inventors continue to spend money and 51% continue to spend time on projects after receiving highly diagnostic advice to cease effort. Using survey data from actual inventors, this paper studies the role of overconfidence, optimism, and the sunk-cost bias in these decisions. We find that inventors are more overconfident and optimistic than the general population. We also find that optimism and past expenditures increased perseverance after being told to quit, while overconfidence in judgment ability had no effect. After being told to quit, optimists spend 166% more than pessimists and those having already spent, for example, $10 000 spend another$10 000.
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Journal articles

https://hal-hec.archives-ouvertes.fr/hal-00476770
Contributor : Antoine Haldemann <>
Submitted on : Tuesday, April 27, 2010 - 11:06:39 AM
Last modification on : Tuesday, December 18, 2012 - 1:42:33 PM

### Citation

Thomas Astebro, Scott A. Jeffrey, Gordon K. Adomdza. Inventor Perseverance after Being Told to Quit : The Role of Cognitive Biases. Journal of Behavioral Decision Making, Wiley, 2007, 20 (3), pp.253-272. ⟨10.1002/bdm.554⟩. ⟨hal-00476770⟩

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