How do Investors Judge the Risk of Financial Instruments
By Mary Lea McAnally, Lisa Koonce, Molly Mercer
January 2005
The Accounting Review, Vol. 80, #1, pp. 221-241
Abstract
This paper proposes and tests a risk model that explains how investors perceive financial risks. The model combines conventional decision-theory variables -- probabilities and outcomes -- with behavioral variables from psychology research by Slovic (1987), such as the extent to which a risky item is new, causes worry, and is controllable. To test our model, we conduct two studies in which MBA students judge the risk of a broad range of financial items. Our results indicate that both the decision-theory variables and Slovic's behavioral variables are important in explaining investors' risk judgments. Further, we demonstrate that information about the amount of potential loss outcome contained within mandated risk disclosures not only directly influences risk judgments but also indirectly affects such judgments via its effect on some of Slovic's behavioral variables. By identifying this unintended consequence of current risk disclosures, these results have the potential to influence the way accounting regulators, firm managers and academic researchers think about risk disclosure.
Keywords
Decision Theory, Psychology, Risk Disclosure, Risk Perception
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