We study the correlation of choice under risk in Holt-Laury lotteries for gains and losses with gender, the use of … the digit ratio (2D:4D) in more than 200 subjects. In males, salivary testosterone is negatively correlated with risk … aversion for gains only. In females, salivary cortisol is positively correlated with risk aversion for gains only. No other …

overbidding in auctions. As a workhorse we use the second-price all-pay and the first-price winner-pay auction. Both risk and …In this paper we use an experiment to compare a theory of risk aversion and a theory of spite as an explanation for … spite can be used to rationalize deviations from risk neutral equilibrium bids in auctions. We exploit that equilibrium …

show that our finding for progesterone is not mediated by risk aversion or bidding mistakes. No hormone responds to total …

English premium auction (EPA) for different risk attitudes of bidders. We explicitly derive the symmetric equilibrium for … are sorted into risk-averse and risk loving groups. We find that revenues in the EPA are significantly higher when bidders … are risk loving rather than risk averse. These results are partly consistent with theory and confirm the general view that …

. Surprisingly, we have null findings for testosterone as well as estradiol and cortisol. Controlling for risk aversion does not … ; Gender ; Competition ; Aggression ; Dominance ; Risk-taking ; Endocrinological economics …

be risk averse, (ii) the bidders can have heterogeneous risk preferences, and (iii) the auction can have a binding … reserve price. Our analysis reveals that the premium has an intricate joint effect on risk sharing and expected revenue, which … in general benefits risk averse bidders. When the seller is more risk averse than the pivotal bidder - a condition often …

contributions. This paper presents experimental results illustrating that the effects of risk and uncertainty depend on the employed … efficiency gains, the presence of risk and uncertainty about the public good's value is not detrimental to cooperation. This … ?nding casts doubt on the hypothesis that risk and uncertainty, per se, weaken people's willingness to contribute. …

individual preferences: risk aversion in monetary outcomes, altruism in a two-person context, and social preferences in a larger … group context. Individual preferences across these three contexts are measured, and there is no possibility for risk sharing …