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First published online May 18, 2015

Identifying and Cultivating Superforecasters as a Method of Improving Probabilistic Predictions

Abstract

Across a wide range of tasks, research has shown that people make poor probabilistic predictions of future events. Recently, the U.S. Intelligence Community sponsored a series of forecasting tournaments designed to explore the best strategies for generating accurate subjective probability estimates of geopolitical events. In this article, we describe the winning strategy: culling off top performers each year and assigning them into elite teams of superforecasters. Defying expectations of regression toward the mean 2 years in a row, superforecasters maintained high accuracy across hundreds of questions and a wide array of topics. We find support for four mutually reinforcing explanations of superforecaster performance: (a) cognitive abilities and styles, (b) task-specific skills, (c) motivation and commitment, and (d) enriched environments. These findings suggest that superforecasters are partly discovered and partly created—and that the high-performance incentives of tournaments highlight aspects of human judgment that would not come to light in laboratory paradigms focused on typical performance.

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Published In

Article first published online: May 18, 2015
Issue published: May 2015

Keywords

  1. predictions
  2. forecasts
  3. expertise
  4. teams
  5. probability training

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© The Author(s) 2015.
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PubMed: 25987508

Authors

Affiliations

Barbara Mellers
Department of Psychology, University of Pennsylvania
Eric Stone
Department of Psychology, University of Pennsylvania
Terry Murray
Haas School of Business, University of California, Berkeley
Angela Minster
Department of Statistics, Temple University
Nick Rohrbaugh
Department of Psychology, University of Pennsylvania
Michael Bishop
Department of Psychology, University of Pennsylvania
Eva Chen
Department of Psychology, University of Pennsylvania
Joshua Baker
Department of Psychology, University of Pennsylvania
Yuan Hou
Department of Psychology, University of Pennsylvania
Michael Horowitz
Department of Psychology, University of Pennsylvania
Lyle Ungar
Department of Psychology, University of Pennsylvania
Philip Tetlock
Department of Psychology, University of Pennsylvania

Notes

Barbara Mellers, Department of Psychology, University of Pennsylvania, Solomon Labs, 3720 Walnut St., Philadelphia, PA 19104 E-mail: [email protected]

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