Hindsight bias, risk perception and investment performance


Biais, Bruno ; Weber, Martin


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URL: http://ub-madoc.bib.uni-mannheim.de/2014
URN: urn:nbn:de:bsz:180-madoc-20140
Document Type: Working paper
Year of publication: 2008
Publication language: English
Institution: Business School > Sonstige - Fakultät für Betriebswirtschaftslehre
MADOC publication series: Lehrstuhl für ABWL, Finanzwirtschaft, insb. Bankbetriebslehre (Weber) > Working Papers
Subject: 330 Economics
Subject headings (SWD): Kognition , Entscheidungstheorie , Börsenmakler , Investmentbank , Deutschland , Großbritannien
Abstract: Once they have observed information, hindsight biased agents fail to remember how ignorant they were initially, “they knew it all along.” We formulate a theoretical model of this bias, providing a foundation for empirical measures, and implying that hindsight biased agents learning about volatility will underestimate it. In an experiment involving 67 students from Mannheim University, we find that hindsight bias reduces volatility estimates. In another experiment, involving 85 investment bankers in London and Frankfurt, we find that more biased agents have lower performance. These findings are robust to differences in location, information, overconfidence and experience.
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Das Dokument wird vom Publikationsserver der Universitätsbibliothek Mannheim bereitgestellt.




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Biais, Bruno ; Weber, Martin (2008) Hindsight bias, risk perception and investment performance. Open Access [Working paper]
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