Literature on Digit Ratio is rapidly growing in Economics. Quite surprisingly we observe that there is no consensus about how to make an accurate measurement in such a delicate task. Along this brief document we offer some concise guidance of how to scan the hands using digital scanners and...

Economic experiments report that individuals perform better under a piece rate payment scheme in comparison to a fixed payment scheme. The reason is straightforward: incentives motivate people, and without incentives they decrease their effort. Yet women are prone to choose a fixed payment over...

Standard economic theory assumes that individual risk taking decisions are independent from the social context. Recent experimental evidence however shows that the income of peers has a systematic impact on observed degrees of risk aversion. In particular, subjects strive for balance in the...

Humans differ greatly in their tendency to discount future events, but the reasons underlying such inter-individual differences remain poorly understood. The evolutionary framework of Life History Theory predicts that the extent to which individuals discount the future should be influenced by...

We study experimentally the impact of pre-play social interactions on negotiations. We isolate the impact of several common components of interactions: conversations, food, and alcoholic or non-alcoholic beverages. Participants perform a standardized negotiation (complex and simple) under six...

Measuring risk preferences in the field is critical for policy, however, it can be expensive and may generate unequal payoffs due to bad luck. For instance, the commonly used measure of Holt and Laury (2002) relies on a dozen of lottery choices and payments which makes it time consuming and...

We report data from an online experiment, which allow us to study whether generosity has changed during the early Covid-19 pandemic. We have gathered data from Spanish participants over a six-day period in which Covid-19-associated deaths in Spain, one of the most affected countries, increased...

The use of hypothetical instead of real decision-making incentives remains under debate after decades of economic experiments. Standard incentivized experiments involve substantial monetary costs due to participants’ earnings and often logistic costs as well. In time preferences experiments,...

The original standard for measuring time preferences was Multiple Price List (MPL), where subjects are asked to choose between an amount of money in the present and a larger amount of money in the future. Convex Time Budget (CTB) was later introduced, allowing subjects to differentially allocate...

This paper explores gender differences in overplacement in two independent and unrelated tasks. The first measures performance via Raven’s Progressive Matrices test, the second in a video presentation assessed by external judges. While in the first task, we expected participants to have prior...