Information gaps for risk and ambiguity.

Information Gaps for Risk and Ambiguity

We apply a model of preferences for information to the domain of decision making under risk and ambiguity. An uncertain prospect exposes an individual to an information gap. Gambling makes the missing information more important, attracting more attention to the information gap. To the extent that the uncertainty (or other circumstances) makes the information gap unpleasant to think about, an in...

Earnings Announcement Premium and Information Ambiguity

In today's investment world there is emphasis on the role of accounting information. Behavioral factors always play an important role in financial markets. All investors are not rational and their demand for riskiness of assets is influenced by their beliefs and feelings. Optimism, pessimism, self-confidence, ambiguity-aversion, etc. help changing the manner of decision-making process over time...

Information Acquisition and Decisions under Risk and Ambiguity # 488

The working papers published in the Series constitute work in progress circulated to stimulate discussion and critical comments. Views expressed represent exclusively the authors' own opinions and do not necessarily refl ect those of the editors. Die Deutsche Bibliothek verzeichnet diese Publikation in der deutschen National-bibliografi e; detaillierte bibliografi sche Daten sind im Internet üb...

Information Acquisition and Decisions under Risk and Ambiguity

Ambiguity, Risk and Portfolio Choice under Incomplete Information

This paper studies optimal consumption and portfolio choice in a Merton-style model with incomplete information when there is a distinction between ambiguity and risk. The latter distinction is afforded by adoption of recursive multiple-priors utility. The fundamental issues are: (i) How does the agent optimally estimate the unobservable processes as new information arrives over time? (ii) What...