Sutter, M., Kocher, M., Strauß, S. (2003), Bargaining under time pressure in an experimental ultimatum game.
published in: Economics Letters 81: 341-347.
Abstract: We examine the influence of time pressure on bargaining behavior in an ultimatum game. Controlling for offers, rejection rates of responders are significantly higher under a tight than under a very weak time constraint. However, this effect vanishes with repetition.