Prospect Theory and Optimal Risky Choices with Goals

Jarecki, Jana B. and Rieskamp, Jörg. (2020) Prospect Theory and Optimal Risky Choices with Goals. In: Proceedings of the 42th Annual Conference of the Cognitive Science Society. 29 July - 1 August 2020. Developing a Mind: Learning in Humans, Animals, and Machines. pp. 43-49.

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Official URL: https://edoc.unibas.ch/76886/

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Decision making under risk is often studied as a preferential choice governed by stable individual personality characteristics, but risky choice can also be viewed as a dynamic problem of resource accumulation to survive. When decision makers aim to reach a particular goal in limited time, such as “earn at least $100 in five choices,” risky choice becomes a non-trivial planning problem. This problem has an optimal solution that can differ from immediate expected-value maximization. We studied the optimality of risky choices under such minimum goal requirements experimentally and find that the observed choices under goals approximate the optimal solution. However, because the optimal model is very complex, we examine if simpler models can predict people’s choices better. We test an extended version of prospect theory, assuming a dynamic reference point that depends on the distance to the goal. This “dynamic prospect theory” was better than the alternative model in describing people’s decisions (i.e., for 63% of the participants, it was the best model). Our findings show that humans can excel in a highly complex, dynamic, risky choice problem and that a dynamic version of prospect theory provides one possible explanation for how people decide under risk when long-term goals matter.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Economic Psychology (Rieskamp)
UniBasel Contributors:Jarecki, Jana and Rieskamp, Jörg
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Publisher:Cognitive Science Society
Note:Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:26 Jan 2021 15:10
Deposited On:26 Jan 2021 15:10

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