We used dual electroencephalography (EEG) to measure brain activity simultaneously in pairs of trustors and trustees playing a 15-round trust game framed as a “trust game” versus a “power game”. Four major findings resulted: first, earnings in each round were higher in the trust than in the power game. Second, in the trust game, reaction time for strategic deliberations was significantly longer for the trustee than the trustor. In the power game, however, the trustee took longer to think about how much money to repay, whereas the trustor took longer to think about how much money to invest. Third, prediction accuracy for the amount exchanged was higher in the trust game than in the power game. Fourth, interbrain synchronicity gauged with the phase-locking value of alpha bands in the brain – especially the frontal and central regions – was higher in the power game than in the trust game. We infer that this last finding reflects elevated mutual strategic deliberation in the power game. These behavioral and neuroscience-based findings give a better understanding of the framing effects of a trust game on the strategic deliberations of both trustor and trustee seeking to attain wealth.

我们使用双脑电图（EEG）来同时测量成对的受托人和受托人的大脑活动，这些受托人和受托人在15轮信任游戏中被称为“信任游戏”与“权力游戏”。结果有四个主要发现：首先，信托的每一轮收益都高于强权博弈。其次，在信任博弈中，受托人对战略审议的反应时间明显长于委托人。但是，在权力博弈中，受托人花了更长的时间考虑要偿还多少钱，而受托人花了更长的时间考虑要投入多少钱。第三，在信任博弈中，对交换量的预测准确性高于在权力博弈中。第四，用力量游戏中的大脑（尤其是额叶和中部区域）的α谱带的锁相值来衡量的人际同步性在信任游戏中高于在信任游戏中。我们推断，这一最后发现反映了权力博弈中相互战略协作的提高。这些基于行为和神经科学的发现可以更好地理解信任博弈对寻求获取财富的受托人和受托人的战略审议的框架影响。