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...

Prenatal exposure to hormones, and to sex hormones in particular, exerts organizational effects on the brain and these have observable behavioral correlates in adult life. There are reasons to expect that social behaviors—which are fundamental for the evolutionary success of humans—might be...

Experimental literature has accumulated evidence on the association of personal characteristics to a higher or lower level of prosocial behavior. There is also evidence that donations are affected by the mere provision of information about the recipients, whatever its nature or content. In this...

Prenatal exposure to hormones, and to sex hormones in particular, exerts organizational effects on the brain and these have observable behavioral correlates in adult life. There are reasons to expect that social behaviors—which are fundamental for the evolutionary success of humans—might be...

Prenatal exposure to hormones, and to sex hormones in particular, exerts organizational effects on the brain and these have observable behavioral correlates in adult life. There are reasons to expect that social behaviors—which are fundamental for the evolutionary success of humans—might be...

Experimental literature has accumulated evidence on the association of personal characteristics to a higher or lower level of prosocial behavior. There is also evidence that donations are affected by the mere provision of information about the recipients, whatever its nature or content. In this...

This paper explores excuse-driven behavior in giving. In our powered laboratory experiment, participants play Dictator Games sharing 5e or 1,000e under certainty or ambiguity with a charity. In contrast to previous papers using MPLs {that necessarily introduce additional layers of...

We report experimental data on expectations about generosity in a dictator game in which dictators first divide the pie and then make a guess about the donation of other dictators. In our experiment, recipients have to guess the donation that they are going to receive from their own dictator as...

What do we expect of others? Do we expect people to be generous? If so, can we attribute this expected generosity to wishful thinking? Are our expectations, to some extent, related to our personal involvement in the outcome or the size of the stakes? This study investigates expectations on...

Mechanisms supporting human ultra-cooperativeness are very much subject to debate. One psychological feature likely to be relevant is the formation of expectations, particularly about receiving cooperative or generous behavior from others. Without such expectations, social life will be seriously...