Handbook of Behavioral Industrial Organization
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Handbook of Behavioral Industrial Organization

Edited by Victor J. Tremblay, Elizabeth Schroeder and Carol Horton Tremblay

The Handbook of Behavioral Industrial Organization integrates behavioral economics into industrial organization. Chapters cover concepts such as relative thinking, salience, shrouded attributes, cognitive dissonance, motivated reasoning, confirmation bias, overconfidence, status quo bias, social cooperation and identity. Additional chapters consider industry issues, such as sports and gambling industries, neuroeconomic studies of brands and advertising, and behavioral antitrust law. The Handbook features a wide array of methods (literature surveys, experimental and econometric research, and theoretical modelling), facilitating accessibility to a wide audience.
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Chapter 6: Risk, overconfidence and production in a competitive market

David R. Just and Ying Cao

Abstract

Underestimation of risk as well as overestimation of mean outcomes has been widely documented in both experimental and field settings. These biases in perception are commonly referred to (either jointly or in isolation) as overconfidence. Several researchers have examined the implications of overconfident decision makers in the context of firms attempting to maximize profit in isolation. We review this literature and then extend this analysis to determine the impact of competitive market forces on overconfident firms. We generalize the analysis of Sandmo, who examined the impact of risk on competitive markets, extending his results to firms displaying overconfidence. We explore the case of imperfect competition, showing that overconfident firms may strictly dominate firms displaying perfect perception in a competitive market. Overconfident producers invest greater amounts and produce more than those with accurate perception. Under risk aversion, modest overconfidence leads to a higher average profit and greater variance of profits, leaving the producer a greater probability of surviving downward competitive pressures. Despite the greater variance of profits, if enough producers underestimate their risk, they should collectively drive decision makers with more accurate perceptions from the market. For this reason, overconfidence may be as important a determinant of market behavior as diminishing marginal utility of wealth or loss aversion.

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