Adversarial System

The trial model in which parties drive the case before a neutral judge

Overview

In the adversarial model, opposing parties investigate, present evidence, and test witnesses through cross examination, while the judge referees law and ensures fairness. The contrast with the inquisitorial tradition, where the court develops the case, is a classic pairing, and in practice systems borrow from each other. Advocates argue adversarial testing best reaches truth and protects autonomy, while critics point to outcome distortion by resources and theater. Common law countries and their derivatives run their criminal and civil trials this way.