Evidence Basics

Introduction

The law of evidence governs the presentation of proof in legal proceedings. The Federal Rules of Evidence (FRE) provide the evidentiary framework for federal courts and have influenced state evidence law. The FRE address the admissibility of evidence, the burden of proof, presumptions, and judicial notice. Understanding the basic structure of evidence law is essential for trial practice.

The Structure of the Federal Rules of Evidence

The FRE are organized into eleven articles covering: general provisions (Article I), judicial notice (Article II), presumptions in civil cases (Article III), relevance (Article IV), privileges (Article V), witnesses (Article VI), opinions and expert testimony (Article VII), hearsay (Article VIII), authentication (Article IX), contents of writings (Article X), and miscellaneous rules (Article XI).

The rules establish a hierarchy of evidentiary considerations. Admissibility analysis proceeds in steps: is the evidence relevant? (Rule 402); is it excluded by specific rules? (Rules 404-415); does its probative value outweigh unfair prejudice? (Rule 403); is it hearsay? (Rules 801-807); is it properly authenticated? (Rule 901); is the original writing required? (Rule 1002).

Judicial Notice

Judicial notice under FRE 201 allows a court to accept as true a fact that is not subject to reasonable dispute because it is generally known within the court’s territorial jurisdiction or can be accurately and readily determined from reliable sources. The court may take judicial notice at any stage of the proceeding.

Judicial notice is mandatory if a party requests it and supplies the necessary information. The court must instruct the jury that it may but need not accept a judicially noticed fact as conclusive in criminal cases.

Presumptions

A presumption is a procedural device that requires the trier of fact to assume the existence of one fact based on proof of another fact. In civil cases, FRE 301 provides that a presumption shifts the burden of production to the opposing party. If the opposing party produces evidence rebutting the presumed fact, the presumption disappears and the case proceeds based on the evidence.

Presumptions serve various policies, including facilitating proof, promoting efficiency, and implementing social policies. Common evidentiary presumptions include the presumption of innocence in criminal cases, the presumption of death after seven years’ absence, and the presumption of mail delivery.

Burden of Proof

The burden of proof has two components. The burden of production requires a party to present sufficient evidence to support a finding in its favor. The burden of persuasion requires a party to convince the trier of fact of the truth of its claims.

The standard of proof varies depending on the nature of the proceeding. Beyond a reasonable doubt is the standard in criminal cases. Clear and convincing evidence is required in certain civil cases, including fraud, punitive damages, and termination of parental rights. Preponderance of the evidence is the standard in most civil cases.

Conclusion

Evidence basics provide the foundation for understanding the law of proof in legal proceedings. The Federal Rules of Evidence structure the analysis of admissibility, from relevance through authentication. Judicial notice, presumptions, and the burden of proof are fundamental evidentiary concepts that operate at every stage of litigation.