We report an experiment examining risk taking and information aggregation in groups. Group members come to the table with an individual preference for a choice under risk, based on privately received information, and can share this information with fellow group members. They then make a decision...

We develop a belief-based account of decision under uncertainty. This model predicts decisions under uncertainty from (i) judgments of probability, which are assumed to satisfy support theory; and (ii) decisions under risk, which are assumed to satisfy prospect theory. In two experiments,...

The present study tested predictions derived from the Risk as Feelings hypothesis about the effects of prior patients' negative treatment outcomes on physicians' subsequent treatment decisions. Two experiments at The University of Chicago, U.S.A., utilized a computer simulation of an abdominal...

In the loss domain, both practical and ethical considerations rule out the systematic use of an incentive-compatible procedure involving real losses. The experimental study presented here aims at investigating whether some easier-to-implement procedure could be adequately used. For that purpose,...

The author analyzes theoretical sources with the view of operationalization and systemization of the notions of risk as well as the notions that are connected to it. This article provides a detailed overview of the definition of risk and its components; it also identifies external and internal...

Consumers can defuse the financial risks of credit default by taking payment protection insurance (PPI). In two studies, predictions derived from Huber’s risk defusing operator theory of decision making were tested. We investigated the effects on PPI judgements and decisions of previous...

Moral hazards are said to occur when one party makes decisions that have potential negative consequences that will either be fully or partially experienced by another party. The present experiment sought to explore moral hazard in a laboratory setting. Participants made choices between certain...

'A New Idea Does Not Come Forth in Its Mature Scientific Form. It Contains Logical Ambiguities Or Errors; the Evidence on Which It Rests Is Incomplete Or Indecisive; and Its Domain of Application Is Exaggerated in Certain Directions and Overlooked in Others', Wrote Stigler (1965, P.14) in One of...