This　study　investigates　the　brain　correlates　of　decisionmaking　and　outcome　evaluation　of　generalized　trust　(i.e.　trust　in　unfamiliar　social　agents)-a　core　component　of　social　capital　which　facilitates　civic　cooperation　and　economic　exchange.　We　measured　18　(9male)　Chinese　participants＇　event-related　potentials　while　they　played　the　role　of　the　trustor　in　a　one-shot　trust　game　with　unspecified　social　agents　(trustees)　allegedly　selected　from　a　large　representative　sample.　At　the　decisionmaking　phase,　greater　N2　amplitudes　were　found　for　trustors＇　distrusting　decisions　compared　to　trusting　decisions,　which　may　reflect　greater　cognitive　control　exerted　to　distrust.　Source　localization　identified　the　precentral　gyrus　as　one　possible　neuronal　generator　of　this　N2　component.　At　the　outcome　evaluation　phase,　principal　components　analysis　revealed　that　the　so　called　feedback-related　negativity　was　in　fact　driven　by　a　reward　positivity,　which　was　greater　in　response　to　gain　feedback　compared　to　loss　feedback.　This　reduced　reward　positivity　following　loss　feedback　may　indicate　that　the　absence　of　reward　for　trusting　decisions　was　unexpected　by　the　trustor.　In　addition,　we　found　preliminary　evidence　suggesting　that　the　decisionmaking　processes　may　differ　between　high　trustors　and　low　trustors.