Separating attitudes towards money from attitudes towards probabilities: Stake effects and ambiguity as a test for prospect theory
Prospect theory (PT) is the dominant descriptive theory of decision making under risk today. For the modeling of choices, PT relies on a psychologically founded separation of risk attitudes into attitudes towards outcomes, captured in a value function; and attitudes towards probabilities, captured in a probability weighting function. However, while it is theoretically sound, it is unclear whether this clear separation is reflected in actual choices. To test this, we designed two experiments. In the first experiment, we elicit the value and probability weighting functions both under known and unknown probabilities. The results support PT and show that the value function is unaffected by the nature of the probabilities, which only affects probability weighting. More in general, this finding supports theories that represent ambiguity attitudes through probability transformations rather than utility transformations. In the second experiment, we examine the effects of an increase in stakes on risk attitudes. We find that the stake increase is not reflected in the value function, but rather in the weighting function, thus contradicting PT's prediction.
|Date of creation:||2013|
|Contact details of provider:|| Postal: Reichpietschufer 50, 10785 Berlin, Germany|
Phone: ++49 - 30 - 25491 - 0
Fax: ++49 - 30 - 25491 - 684
Web page: http://www.wzb.eu/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Mohammed Abdellaoui & Han Bleichrodt & Olivier L'Haridon & Dennie Van Dolder, 2013. "Source-Dependence of Utility and Loss Aversion: A Critical Test of Ambiguity Models," Economics Working Paper Archive (University of Rennes 1 & University of Caen) 201330, Center for Research in Economics and Management (CREM), University of Rennes 1, University of Caen and CNRS.
- von Gaudecker, H.M. & van Soest, A.H.O. & Wengstrom, E., 2009.
"Heterogeneity in Risky Choice Behavior in a Broad Population,"
2009-12, Tilburg University, Center for Economic Research.
- Hans-Martin von Gaudecker & Arthur van Soest & Erik Wengstrom, 2011. "Heterogeneity in Risky Choice Behavior in a Broad Population," American Economic Review, American Economic Association, vol. 101(2), pages 664-694, April.
- von Gaudecker, H.M. & van Soest, A.H.O. & Wengstrom, E., 2011. "Heterogeneity in risky choice behavior in a broad population," Other publications TiSEM d4881c0f-4798-404d-b796-5, Tilburg University, School of Economics and Management.
- Gaudecker, Hans-Martin von & van Soest, Arthur & Wengström, Erik, 2009. "Heterogeneity in Risky Choice Behaviour in a Broad Population," IZA Discussion Papers 4022, Institute for the Study of Labor (IZA).
- Guido Baltussen & G. Post & Martijn Assem & Peter Wakker, 2012. "Random incentive systems in a dynamic choice experiment," Experimental Economics, Springer;Economic Science Association, vol. 15(3), pages 418-443, September.
When requesting a correction, please mention this item's handle: RePEc:zbw:wzbrad:spii2013401. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (ZBW - German National Library of Economics)
If references are entirely missing, you can add them using this form.