We present results from a "corruption game" (a dictator game modified so that recipients can take a side payment in exchange for accepting a reduction in the overall size of the pie). Dictators (silently) treated to be ...

Establishing the conditions that guarantee the spreading or the sustenance of altruistic traits in a population is the main goal of intergroup selection models. Of particular interest is the balance of the parameters ...

The present study investigates the plasticity of altruistic behavior in children, analyzing the effect of a short intervention on 6- to 7-year-olds. After a 10-session intervention performed in a school context, altruism ...

Moral decisions – that is, decisions that consider the consequences for the welfare of others – can be highly inconsistent across contexts. Here, we explore whether the altruism of young people is related to their willingness ...

The prisoner's dilemma (PD) is the leading metaphor for the evolution of cooperative behavior in populations of selfish agents. Although cooperation in the iterated prisoner's dilemma (IPD) has been studied for over twenty ...

Recruiting safe, volunteer blood donors requires understanding motivations for donating and knowledge and attitudes about HIV. We surveyed 1,600 persons presenting for blood donation at a large blood bank in Sao Paulo, ...

We study by means of a laboratory experiment the role of individuals' empathy in the Vote-with-the-Wallet Game. Our main purpose is to analyze the impact of the ability to empathize on participants' behavior when asked to ...