In the last decades, there has been a large volume of research showing that emotions do have relevant effects on decision-making. We contribute to this literature by experimentally investigating the impact of four specific emotional states - joviality, sadness, fear, and anger - on risk...

We relax assumptions on individual risk preference, and set two theoretical rules for portfolio choices: either minimize or maximize risk, for any return. Risk is modeled by four alternative formulas. We empirically test these rules by observing N=690 individuals (Caucasians, bank customers and...

This paper presents four incentivised experiments analysing jointly the separate role of immediate integral emotions and knowledge in individual decision making under ambiguity. Reactions to a natural source of uncertainty (i.e., forthcoming real-world election results) were measured using both...

The results of a new experimental study reveal highly systematic violations of expected utility theory. The pattern of these violations is exactly the opposite of the classical common ratio effect discovered by Allais (1953). Two recent decision theories - stochastic expected utility theory...

Higher order risk preferences are important determinants of choices under uncertainty. After clarifying some terminological and methodological issues, we are able to confi rm, by using data collected by a questionnaire, the well established result of the preference of the majority of the...

We report evidence of an endowment effect for risk, extending previous results to the popular paired-choice lottery setting. Specifically, we observe a distribution of revealed preferences consistent with risk aversion that diminishes in endowed variance, although the effect is considerably...

This paper presents a nonparametric approach to classification of data from lottery experiments. Using very basic mathematical tools the paper endeavors to answer the questions: How to determine the "average" subject in a group? How to find a subject presenting the most similar behavior to a...