1
文献名："Incidental sadness biases social economic decisions in the Ultimatum Game."  
作者：Harle, K. M. and A. G. Sanfey (2007)
期刊：Emotion 7(4): 876-81.
2
文献名："Fairness evolution in the ultimatum game is a function of reward size."  
作者：Hardling, R. (2007).
期刊：J Theor Biol 246(4): 720-4.

感谢非常！