Younger adults are more prosocial than older adults in economic decision making results from the give and take game

The present study was designed to investigate the disadvantageous and advantageous inequity aversion of young and older adults in situations which allowed them to maximize or minimize payoff inequalities. Given the very limited evidence regarding an actual age-related effect on inequity aversion, the purpose of this study was to examine this question using an economic game, "the Give-and-Take Game", which is able to circumvent certain limitations of the Ulti-matum Game, to evaluate inequity aversion (i.e., a same behaviour which can be induced by opposite motivations: prosocial vs. pro-self vs. altruistic orientations). In the "Give-and-Take Game", a sum of money was randomly distributed between the participant and a dummy player. These distributions created monetary inequalities, advantageous either for the participant (to examine advantageous inequity aversion) or for the other player (to examine disadvantageous inequity aversion). Different response options were proposed to the participants to either maxi-mize or minimize payoff inequalities between the players. This procedure not only allowed to differentiate individual's profiles with more prosocial vs. pro-self vs. altruistic orientations, but also to examine age-related effects on these profiles. The results showed that older adults showed a more important pro-self orientation compared to their younger counterparts. They more frequently selected the options which maximized their own payoffs and were less averse to ad-vantageous inequity compared to young adults. In contrast, young adults showed a similar level of advantageous and disadvantageous inequity aversion. Older adults focused on the economic and competitive dimension of the game, which may have motivated them to maximize their own payoffs. Conversely, young adults took into account the social dimension of the game, focusing on a fair monetary distribution.