Cooperation among individuals depends, in large part, on a sense of fairness. Many cooperating non-human primates (NHPs) show inequity aversion, (i.e., negative responses to unequal outcomes), and these responses toward inequity likely evolved as a means to preserve the advantages of cooperative relationships. However, marmosets (Callithrix spp.) tend to show little or no inequity aversion, des...

Study objective: There is an increasing body of evidence about socioeconomic inequality in preventive use, mostly for cancer screening. But as far as needs of prevention are unequally distributed, even equal use may not be fair. Moreover, prevention might be unequally used in the same way as health care in general. The objective of the paper is to assess inequity in prevention and to compare so...

Adults and children are willing to sacrifice personal gain to avoid both disadvantageous and advantageous inequity. These two forms of inequity aversion follow different developmental trajectories, with disadvantageous inequity aversion emerging around 4 years and advantageous inequity aversion emerging around 8 years. Although inequity aversion is assumed to be specific to situations where res...

The standard contract theory adopts the traditional hypothesis of pure self-interest. However, a series of game experiments have proven that people are not any self-interest but also inequity averse. Then, how will the inequity aversion influence the optimal contract for multiple agents? This paper attempts to obtain new theoretical insights by incorporating inequity aversion into the standard ...

Successful and repeated cooperation requires fairly sharing the spoils of joint endeavors. Fair distribution is often done according to preferences for equitable outcomes even though strictly equitable outcomes can lead to inefficient waste. In addition to preferences about the outcome itself, decision makers are also sensitive to the attributions others might make about them as a result of the...

0022-1031/$ see front matter 2008 Elsevier Inc. A doi:10.1016/j.jesp.2008.09.010 * Corresponding author. Fax: +1 650 723 9932. E-mail address: [email protected] (B.S. Lower Most theories of inequity focus on relative inequity. In contrast, this paper provides evidence that individuals infer what people should have (i.e. an absolute standard) from the way inequity is described. In the reporte...

Elucidating how inequity aversion (a tendency to dislike and correct unequal outcomes) functions as one develops is important to understanding more complex fairness considerations in adulthood. Although previous research has demonstrated that adults and children reduce inequity, it is unclear if people are actually responding negatively to inequity or if people dislike others getting more than ...