Dynamic Experiments for Estimating Preferences: An Adaptive Method of Eliciting Time and Risk Parameters

Olivier Toubia (), Eric Johnson (), Theodoros Evgeniou () and Philippe Delquié ()
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Olivier Toubia: Columbia Business School, Columbia University, New York, New York 10027
Eric Johnson: Columbia Business School, Columbia University, New York, New York 10027
Theodoros Evgeniou: INSEAD, 77305 Fontainebleau, France
Philippe Delquié: School of Business, The George Washington University, Washington, DC 20052

Management Science, 2013, vol. 59, issue 3, 613-640

Abstract: We present a method that dynamically designs elicitation questions for estimating risk and time preference parameters. Typically these parameters are elicited by presenting decision makers with a series of static choices between alternatives, gambles, or delayed payments. The proposed method dynamically (i.e., adaptively) designs such choices to optimize the information provided by each choice, while leveraging the distribution of the parameters across decision makers (heterogeneity) and capturing response error. We explore the convergence and the validity of our approach using simulations. The simulations suggest that the proposed method recovers true parameter values well under various circumstances. We then use an online experiment to compare our approach to a standard one used in the literature that requires comparable task completion time. We assess predictive accuracy in an out-of-sample task and completion time for both methods. For risk preferences, our results indicate that the proposed method predicts subjects' willingness to pay for a set of out-of-sample gambles significantly more accurately, while taking respondents about the same time to complete. For time preferences, both methods predict out-of-sample preferences equally well, while the proposed method takes significantly less completion time. For risk and time preferences, average completion time for our approach is approximately three minutes. Finally, we briefly review three applications that used the proposed methodology with various populations, and we discuss the potential benefits of the proposed methodology for research and practice. This paper was accepted by Teck Ho, decision analysis.

Keywords: prospect theory; time discounting; Bayesian statistics; adaptive experimental design; revealed preference (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (43)

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