Reading Between The Lines: Modeling and Evaluating Behavioral Realism in Legal Simulation
Deposition training requires attorneys to manage dynamic witness behavior, yet legal-AI evaluations largely focus on factual accuracy, reasoning, or response-level plausibility. We introduce WitnessSim, a deposition simulator driven by controllable legal personas. We use an evaluation framework separating behavioral realism from pedagogical usefulness. We assess realism through adversarial testing, blinded attorney comparison, and analysis of longitudinal behavioral trajectories. WitnessSim generally maintained plausible behavioral boundaries, and attorneys did not systematically prefer either original testimony or WitnessSim generated testimony. Pedagogical tests showed that witness beha...
| Authors | Divya Vetticaden, Arya Gupta, Julian Nyarko et al. |
|---|---|
| Primary category | cs.CY |
| Published | 13 August 2026 |
| Last updated at source | 13 August 2026 |
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