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Optimal illusions and decisions under risk

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dc.creator Gollier, Christian
dc.date 2005
dc.date.accessioned 2013-10-16T07:01:05Z
dc.date.available 2013-10-16T07:01:05Z
dc.date.issued 2013-10-16
dc.identifier http://hdl.handle.net/10419/18746
dc.identifier ppn:479119465
dc.identifier.uri http://koha.mediu.edu.my:8181/xmlui/handle/10419/18746
dc.description We examine a static one-risk-free-one-risky asset portfolio choice when the investor?s wellbeing is affected by the anticipatory feelings associated to potential capital gains and losses. These feelings can be manipulated by the choice of subjective beliefs on the distribution of returns. However, the bias of these endogenous subjective beliefs induces the choice of a portfolio that is suboptimal with respect to the objective expected utility of final wealth. We characterize the structure of these optimal beliefs. We first show that optimal subjective beliefs must be degenerated with only two possible returns. Moreover, under some weak conditions on the utility function, these two atoms are at the lower and upper bounds of the objectively feasible returns. When the intensity of anticipatory feelings is small, the formation of beliefs must be biased in favor of optimism, which implies an increase in the equilibrium demand for the risky asset. We also show that the optimal beliefs are approximately independent of the investor?s degree of risk aversion.
dc.language eng
dc.publisher
dc.relation CESifo working papers 1382
dc.rights http://www.econstor.eu/dspace/Nutzungsbedingungen
dc.subject D81
dc.subject ddc:330
dc.subject anticipatory feelings
dc.subject portfolio choice
dc.subject overconfidence
dc.subject positive thinking
dc.subject endogenous beliefs
dc.subject Anlageverhalten
dc.subject Portfolio-Management
dc.subject Emotion
dc.subject Erwartungstheorie
dc.subject Scheingewinn
dc.subject Bias
dc.subject Theorie
dc.title Optimal illusions and decisions under risk
dc.type doc-type:workingPaper


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