To explore the effect of stigma information on in/out group trust in stigmatized groups, with
the stigmatized groups as participants, trust game was used to compare in/out group trust between two
groups (priming stigma information, priming neutral information). Results: (1) Under priming stigma
information conditions, the amount of money invested to the members of in-group is significantly higher
than that invested to the members of the out-group; and the amount of money invested to the members
of in-group is significantly higher than that invested to the stranger; and the amount of money invested
to the members of out-group is significantly lower than that invested to the stranger; (2) Under priming
neutral information conditions, there were no significant difference among the amount of money invested
to the members of in-group, the members of out-group, and the stranger. Conclusion: Under priming
stigma information conditions, the stigmatized groups have more trust in the members of the in-group
and have a little trust in the members of the out-group.