They asked their subjects to participate in an experiment that economists call the ultimatum game.

Trial of experiments that held different combinations of the ultimatum game was done.

An ultimatum game is a form of Hobson's choice.

In the ultimatum game, the first player is given, say, $10 in cash.

Many variations of the ultimatum game have been used to better understand human behavior in economic situations.

Professor Zak and his colleagues study trust with a variation of the ultimatum game.

Other authors have used evolutionary game theory to explain behavior in the ultimatum game.

One experiment, called the ultimatum game, involves two people with a fixed sum of money that must be divided between them.

Consider the ultimatum game, where one player proposes to split a dollar with another.

What's more perplexing about Wilson's argument is that the ultimatum game has been played in many different countries with similar results.