Well by measuring oxytocin we found that the more money the second person received, the more their brain produced oxytocin, and the more oxytocin on board, the more money they returned.
Ved at måle oxytocin fandt vi ud af at jo flere penge den anden person modtog, desto mere oxytocin producerede hjernen, og jo mere oxytocin der blev dannet, desto flere penge gave de tilbage.