In the 40’s and early 50’ two decision theories were proposed and have since dominated the sceneof the fascinating field of decision-making. In 1944 – when von Neumann and Morgenstern showedthat if preferences are consistent with a set of axioms then it is possible to represent these...

Seminal models of herd behaviour and informational cascades point out the existence of information negativeexternalities, and propose to destroy information in order to achieve social improvements. Although in the lastyears many features of herd behaviour and informational cascades have been...

Experimental research on decision making under risk has until now always employed choicedata in order to evaluate the empirical performance of expected utility and the alternative nonexpectedutility theories. The present paper performs a similar analysis which relies on pricingdata instead of...

This paper aims to experimentally investigate how individual willingness to pay for a lottery is affected by using a new way of representing of probabilistic ambiguity. Thus we can see how individual valuation reacts to different degrees of ambiguity probability information provided to subjects....

The theoretical approach in dealing with the aggregation of information in markets in general, and financial markets in particular considers information as an exogenous element to the system, focusing just on conditions and consequences of the efficient incorporation of information into prices....

Models of herd behaviour and informational cascades were theoretically developed in 1992 respectively by Banerjee (A simple model of herd behavior) and Bikhchandani, Hirshleifer and Welch (A Theory of Fads, Fashion, Custom and Cultural Change as Informational Cascades). Both articles pointed out...