WitnessSim: A New Deposition Simulator for Legal Training
WitnessSim, a new deposition simulator, has been developed by researchers to enhance attorney training by simulating dynamic witness behavior. This innovative system employs controllable legal personas to create authentic testimony. An evaluation framework distinguishes between behavioral realism and educational effectiveness, measuring realism through adversarial testing, blinded comparisons among attorneys, and the analysis of behavioral changes over time. Findings reveal that WitnessSim typically adhered to believable behavioral limits, with attorneys showing no consistent preference for either original or WitnessSim-generated testimonies. Additionally, pedagogical assessments demonstrated that witness behavior significantly adapted to the form of questions and attorney interventions, while still maintaining the integrity of the assigned persona. This research offers a structure for assessing behavioral accuracy in legal simulations.
Key facts
- WitnessSim is a deposition simulator driven by controllable legal personas.
- The evaluation framework separates behavioral realism from pedagogical usefulness.
- Realism is assessed through adversarial testing, blinded attorney comparison, and analysis of longitudinal behavioral trajectories.
- WitnessSim generally maintained plausible behavioral boundaries.
- Attorneys did not systematically prefer either original testimony or WitnessSim-generated testimony.
- Pedagogical tests showed that witness behavior changed meaningfully in response to question form and attorney intervention.
- The persona was not uniformly collapsed during interventions.
- The paper is available on arXiv with identifier 2608.13712.
Entities
Institutions
- arXiv