Two studies developed and validated a context-independent situational judgment test (SJT) of prosocial implicit trait policy (ITP). The first study developed an SJT based on critical incidents about the prosocial behavior of physicians, lawyers, community service volunteers, and human factors engineers. In a sample of 396 undergraduates, this SJT was internally consistent and correlated significantly with other trait constructs related to prosocial ITP. In the second study with 134 undergraduates, the SJT was significantly correlated with relevant trait constructs and prosocial performance in role-plays simulating scenarios in which others needed help. These results show that a generic SJT developed from items that describe situations and actions specific to several occupations can predict behavior in situations unlike any that appear in its items.