How do judges and juries have different roles in a U.S. criminal trial?

In the U.S. criminal justice system, the roles of the judge and the jury are distinct, reflecting a division of functions within the adversary procedure.1

The Role of the Judge

The judge acts as the supervisor of the trial, ensuring that proceedings adhere to the law. Their primary responsibilities include:2
* Managing Evidence: The judge determines the admissibility of evidence, deciding what the jury is permitted to hear.21
* Instructing the Jury: The judge explains the applicable law to the jurors, which they must apply to reach a verdict.23
* Supervision: The judge rules on motions, oversees the selection of the jury panel, and maintains order in the courtroom.23
* Legal Oversight: If the judge determines that the evidence presented is insufficient to support a factual issue, they may withdraw that issue from the jury or direct an acquittal; however, they cannot direct a guilty verdict.2

The Role of the Jury

The jury serves as the impartial trier of fact. Their responsibilities include:4
* Determining Facts: Jurors are responsible for evaluating the evidence presented and determining the facts of the case.5
* Rendering a Verdict: The jury is autonomous in its deliberations and is responsible for delivering the final verdict of guilty or not guilty.1

While the judge oversees the legal framework, they do not participate in the jury's private deliberations.1