Background: Medical specialties, including surgery, obstetrics, anesthesia, critical care, and trauma, have adopted simulation technology for measuring clinical competency as a routine part of their residency training programs; yet, simulation technologies have rarely been adapted or used for psychiatry training. Objective: The authors describe the development of a web-based computer simulation tool intended to assess physician competence in obtaining informed consent before prescribing antipsychotic medication to a simulated patient with symptoms of psychosis. Method: Eighteen residents participated in a pilot study of the Computer Simulation Assessment Tool (CSAT). Outcome measures included physician performance on required elements, pre- and post-test measures of physician confidence in obtaining informed consent, and levels of system usability. Results: Data suggested that the CSAT increased physician confidence in obtaining informed consent and that it was easy to use. Conclusions: The CSAT was an effective educational tool in simulating patient-physician interactions, and it may serve as a model for use of other web-based simulations to augment traditional teaching methods in residency education.