When overconfident agents slow down collective learning
This paper presents a model of influence where agents' beliefs are based on an objective reality, such as the properties of an environment. The perception of the objective reality is not direct: all agents know is that the more correct a belief, the more successful the actions that are deduced from this belief. (A pair of agents can influence each other when )Agents can influence eachother by pair when they perform a joint action. They are not only defined by individual beliefs, but also idyosynchratic confidence in their belief - this means that they are not all willing to (engage in action with) act with agents with a different belief and to be influenced by them. We show here that the distribution of confidence in the group has a huge impact on the speed and quality of collective learning and in particular that a small number of overconfident agents can prevent the whole group frow learning properly.
|Date of creation:||Jan 2012|
|Publication status:||Published in SIMULATION, SAGE Publications, 2012, 88 (1), pp.33-49. <10.1177/0037549711428948>|
|Note:||View the original document on HAL open archive server: https://hal-paris1.archives-ouvertes.fr/hal-00623966|
|Contact details of provider:|| Web page: https://hal.archives-ouvertes.fr/|
References listed on IDEAS
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- Gilles Hilary & Lior Menzly, 2006.
"Does past success lead analysts to become overconfident?,"
- Gilles Hilary & Lior Menzly, 2006. "Does Past Success Lead Analysts to Become Overconfident?," Management Science, INFORMS, vol. 52(4), pages 489-500, April.
- Biais, Bruno & Hilton, Denis & Mazurier, Karine & Pouget, Sébastien, 2004.
"Judgmental Overconfidence, Self-Monitoring and Trading Performance in an Experimental Financial Market,"
IDEI Working Papers
259, Institut d'Économie Industrielle (IDEI), Toulouse.
- Bruno Biais & Denis Hilton & Karine Mazurier & Sébastien Pouget, 2005. "Judgemental Overconfidence, Self-Monitoring, and Trading Performance in an Experimental Financial Market," Review of Economic Studies, Oxford University Press, vol. 72(2), pages 287-312.
- Guillaume Deffuant & Frederic Amblard & GÃ©rard Weisbuch, 2002. "How Can Extremism Prevail? a Study Based on the Relative Agreement Interaction Model," Journal of Artificial Societies and Social Simulation, Journal of Artificial Societies and Social Simulation, vol. 5(4), pages 1-1.
- Katarzyna Sznajd-Weron & Józef Sznajd, 2000.
"Opinion Evolution In Closed Community,"
International Journal of Modern Physics C (IJMPC),
World Scientific Publishing Co. Pte. Ltd., vol. 11(06), pages 1157-1165.
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