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Separating attitudes towards money from attitudes towards probabilities: stake effects and ambiguity as a test for prospect theory
[Arbeitspapier]
Körperschaftlicher Herausgeber
Wissenschaftszentrum Berlin für Sozialforschung gGmbH
Abstract 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 i... mehr
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. (author's abstract)... weniger
Thesaurusschlagwörter
Risikoverhalten; Wahrscheinlichkeit; Präferenz; Wert; Entscheidung; Geld
Klassifikation
Allgemeine Psychologie
Wirtschaftssoziologie
Sprache Dokument
Englisch
Publikationsjahr
2013
Erscheinungsort
Berlin
Seitenangabe
28 S.
Schriftenreihe
Discussion Papers / Wissenschaftszentrum Berlin für Sozialforschung, Forschungsschwerpunkt Markt und Entscheidung, WZB-Nachwuchsgruppe Risiko und Entwicklung, SP II 2013-401
Handle
https://hdl.handle.net/10419/83653
Status
Veröffentlichungsversion; begutachtet
Lizenz
Deposit Licence - Keine Weiterverbreitung, keine Bearbeitung