Recent reports in the field of medicine have recommended teamwork training as method of reducing human error. The current study evaluated a teamwork training protocol that used a lecture, several role plays, and guided discussion for feedback. Forty-one medical residents participated in the training on 1 of 2 days (groups) and completed evaluation measures both prior to and immediately following the training program. Means for a situational judgment test (SJT) were higher for post-training scores than pre-training scores. However, mean comparisons with teamwork attitudes and learning goal orientation did not yield significant differences. An item analysis of the SJT responses indicated significant response shifts that corresponded to teamwork behaviors. Results suggested that teamwork training positively affected behavioral intentions for trauma room teamwork.