This study was performed to determine if a simulated legal deposition increases emergency medicine (EM) residents' knowledge, self-confidence, and understanding of a legal deposition. This prospective study included a convenience sample of EM 1-3 residents. A knowledge and a self-assessment pretest were given, followed by a didactic session moderated by local attorneys, followed by knowledge and a self-assessment posttest. The total time involved was 2 hours. The mean score on the knowledge pretest was 4.5 and 5.25 on the posttest. Using a paried t-test, the authors found this difference to be statistically signifi: cant. (P < 0.01) Using HoteUing's T2 test, the authors compared presimulation and postsimulation self-assessment questions. The results r~vealed that there was a difference between these scores (P < 0.001). Participants in the deposition significantly improved their self-assessment ranking and knowledge inventory test scores by participating in a simulated legal deposition.