Relevance
Rule
FRE 401 — Test for Relevant Evidence Evidence is relevant if: (a) it has any tendency to make a fact more or less probable than it would be without the evidence; and (b) the fact is of consequence in determining the action.
FRE 402 — General Admissibility of Relevant Evidence Relevant evidence is admissible unless a federal statute, the Constitution, the FRE, or other rules prescribed by the Supreme Court provide otherwise. Irrelevant evidence is not admissible.
FRE 403 — Excluding Relevant Evidence for Prejudice, Confusion, Waste of Time The court may exclude relevant evidence if its probative value is substantially outweighed by the danger of:
- unfair prejudice
- confusing the issues
- misleading the jury
- undue delay
- wasting time
- needlessly presenting cumulative evidence
Elements
FRE 401 — Two-pronged relevance test
- Probative: Does the evidence tend to make a fact more or less probable? (Even a slight tendency suffices — the standard is low)
- Material: Is the fact of consequence to the action? (Relates to the substantive law elements in dispute)
FRE 403 — Balancing test
- Assess the probative value of the evidence
- Identify the specific danger (unfair prejudice, confusion, etc.)
- The danger must substantially outweigh probative value for exclusion (tilted in favor of admission)
- Court has discretion; reviewed for abuse of discretion on appeal
Conditional Relevance — FRE 104(b)
When relevance depends on whether a fact exists, the court may admit the evidence subject to the proponent later proving that the conditioning fact exists. The standard is whether a reasonable jury could find the conditioning fact by a preponderance.
Exceptions / Related Exclusions
Evidence may be relevant but excluded by:
- FRE 404 — Character evidence / propensity
- FRE 407 — Subsequent remedial measures
- FRE 408 — Settlement negotiations
- FRE 409 — Offers to pay medical expenses
- FRE 410 — Pleas and plea discussions
- FRE 411 — Liability insurance
- FRE 501 — Privilege
Policy
- The relevance threshold is intentionally low — “any tendency” — to avoid over-exclusion
- FRE 403 is the primary safety valve; it protects against evidence that is technically probative but practically more likely to cause the jury to decide on an improper basis
- “Unfair” prejudice means prejudice beyond the legitimate harm of evidence against one’s case; all damaging evidence is prejudicial in some sense
- Courts grant significant discretion under 403 because the trial judge is best positioned to assess courtroom dynamics
Key Cases
- Old Chief v. United States — FRE 403 requires comparing probative value of disputed evidence against alternatives the proponent would accept; a stipulation to a prior conviction may substantially reduce probative value of evidence of the name/nature of the conviction