Stake size effects in ultimatum game and dictator game offers: A meta-analysis

Are people more generous when less money is at stake? The Ultimatum Game (UG) and Dictator Game (DG) are often used as models of bargaining and charitable giving, respectively. Previous studies have produced conflicting results on whether UG and DG offers are lower when the stakes are high, and many previous studies had insufficient statistical power to detect significant effects of stake size. To resolve this, we conducted a meta-analysis of 31...