Sticking with What (Barely) Worked
Outcome bias occurs when an evaluator considers ex-post outcomes when judging whether a choice was correct, ex-ante. We formalize this cognitive bias in a simple model of distorted Bayesian updating. We then examine strategy changes made by professional football coaches. We find they are more likely to revise their strategy after a loss than a win -- even for narrow losses, which are uninformative about future success. This increased revision following a loss occurs even when a loss was expected, and the offensive strategy is revised even when failure is attributable to the defense. These results are consistent with our model's predictions.
|Date of creation:||Oct 2011|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- David Card & Gordon B. Dahl, 2011.
"Family Violence and Football: The Effect of Unexpected Emotional Cues on Violent Behavior,"
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- David Card & Gordon Dahl, 2009. "Family Violence and Football: The Effect of Unexpected Emotional Cues on Violent Behavior," RCER Working Papers 546, University of Rochester - Center for Economic Research (RCER).
- David Card & Gordon Dahl, 2009. "Family Violence and Football: The Effect of Unexpected Emotional Cues on Violent Behavior," NBER Working Papers 15497, National Bureau of Economic Research, Inc.
- Card, David & Dahl, Gordon B., 2010. "Family Violence and Football: The Effect of Unexpected Emotional Cues on Violent Behavior," IZA Discussion Papers 4869, Institute for the Study of Labor (IZA).
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