] The study authors looked at what happened in the brains
] of both players during 10 rounds of the game.
]
] They found the extent to which the players trusted each
] other with their money depended on the recent history of
] the exchange.
]
] Activity in the caudate nucleus was greatest when the
] investor repaid generosity with generosity and most
] subdued when the investor repaid generosity with
] stinginess.
]
] According to the researchers, this suggested that the
] caudate nucleus receives or computes information about
] both the fairness of a social partner's decision and the
] intention to repay that decision with trust.
]
] As the game went on, brain scan signs of the trustee's
] intention to "trust" or "not to trust" the investor began
] before the investor revealed whether were going to
] increase their investment or not.

Pretty cool. Don't count on us to incorporate brain scans into the MemeStreams Reputation System though..

] His team is also investigating whether trust differs
] across nationalities, comparing German volunteers
] with volunteers from China.

Someone has been reading Fukuyama.

BBC | Scan 'shows if people trust you'