What principle holds that no one judges their own case?

The principle that holds that no one judges their own case is known as "Nemo Judex in Causa Sua." This legal maxim translates to "no one should be a judge in their own cause." It is fundamental to ensuring impartiality in legal proceedings and is rooted in the idea that personal interests can bias judgment.

This principle is essential in various legal systems to maintain fairness and objectivity. It prohibits individuals from taking part in decisions in which they have a personal stake, thereby preserving the integrity of the judicial process. For instance, if a party in a dispute were allowed to judge their case, it would lead to conflicts of interest and undermine confidence in the fairness of the legal system.

Other options presented do not relate to the principle in question. "Res Judicata" refers to the concept that a matter already judged cannot be litigated again, reinforcing finality in legal decisions but not addressing impartiality in judgment. "Actus Reus" pertains to the physical act of committing a crime rather than judicial impartiality. "In Loco Parentis" refers to the responsibility of a person or organization to take on the duties of a parent, and it similarly does not address the theme of impartiality in legal judgment.

Therefore, Nemo