Impeachment Methods
What is the Impeachment Methods?
Impeachment is the process of attacking a witness's credibility. Methods include prior inconsistent statements, bias, character for untruthfulness, specific instances of conduct, prior convictions (FRE 609), contradiction, and sensory or mental defects.
Definition
Impeachment refers to the various methods by which a party may attack the credibility of a witness. The Federal Rules of Evidence contemplate multiple impeachment techniques, each with its own requirements and limitations. Understanding these methods and their interrelationships is essential for evidence exams and trial practice.
The primary impeachment methods include: (1) Prior inconsistent statements under FRE 613, which may be used to show the witness has said something different before (if given under oath at a proceeding, they are also admissible substantively under 801(d)(1)(A)); (2) Bias, interest, or motive to lie, which is always a permissible ground for impeachment even though it is not addressed by a specific Federal Rule; (3) Character for untruthfulness under FRE 608(a), proved by reputation or opinion testimony; (4) Specific instances of conduct probative of untruthfulness under FRE 608(b), which may be inquired into on cross-examination but cannot be proved by extrinsic evidence; (5) Prior criminal convictions under FRE 609, with special balancing tests depending on the nature of the crime and the witness; (6) Contradiction by other evidence showing the witness testified inaccurately; and (7) Sensory or mental deficiency affecting the witness's ability to perceive, remember, or communicate.
FRE 609 deserves special attention. Convictions for crimes punishable by more than one year are admissible subject to FRE 403 balancing (for non-accused witnesses) or a stricter reverse-403 balancing test (for the accused, where prejudice must be outweighed by probative value). Convictions for crimes involving dishonesty or false statement (e.g., perjury, fraud, forgery) are admissible regardless of the punishment and are not subject to any balancing test. Convictions older than 10 years are presumptively excluded unless probative value substantially outweighs prejudicial effect.
Key Elements
- 1Prior inconsistent statements (FRE 613): showing the witness said something different before
- 2Bias, interest, or motive: showing the witness has a reason to lie or shade testimony
- 3Character for untruthfulness (FRE 608(a)): reputation or opinion evidence of the witness's dishonest character
- 4Specific instances of conduct (FRE 608(b)): cross-examination about untruthful acts (no extrinsic evidence allowed)
- 5Prior convictions (FRE 609): crimes punishable by over one year (with balancing) or crimes of dishonesty (no balancing)
- 6Contradiction: proving through other evidence that the witness's testimony is inaccurate
- 7Sensory or mental deficiency: challenging the witness's ability to perceive, recall, or communicate
Landmark Cases
United States v. Abel
469 U.S. 45 (1984)
Confirmed that bias is always a permissible ground for impeachment, even though no specific Federal Rule addresses it, and that extrinsic evidence of bias is admissible.
Luce v. United States
469 U.S. 38 (1984)
Held that a defendant must testify to preserve a claim of error regarding the trial court's ruling on the admissibility of prior convictions for impeachment under FRE 609.
Ohler v. United States
529 U.S. 753 (2000)
Held that a defendant who preemptively introduces their own prior conviction on direct examination cannot claim error in the trial court's ruling allowing the conviction for impeachment.
United States v. Lindemann
85 F.3d 1232 (7th Cir. 1996)
Discussed the extrinsic evidence limitation under FRE 608(b), confirming that specific instances of untruthful conduct raised on cross-examination cannot be proved by extrinsic evidence.
Exam Tips
- For FRE 609, remember the two-track analysis: crimes of dishonesty are automatically admissible (no balancing); other felonies require balancing that differs depending on whether the witness is the accused.
- Under FRE 608(b), you are 'stuck with the answer' — if the witness denies the specific instance of conduct, you cannot introduce extrinsic evidence to prove it. But for bias, extrinsic evidence IS allowed.
- Prior inconsistent statements used for impeachment are not hearsay (not offered for truth) unless they were given under oath at a proceeding, in which case they come in substantively under 801(d)(1)(A).
- Bias impeachment is the 'wild card' — it is always available, extrinsic evidence is permitted, and no specific rule limits it.
Common Mistakes to Avoid
- Confusing the balancing tests under FRE 609: for the accused, the probative value must outweigh the prejudicial effect (reverse 403); for other witnesses, standard FRE 403 applies.
- Attempting to prove specific instances of untruthful conduct under FRE 608(b) with extrinsic evidence — the rule limits proof to cross-examination inquiry only.
- Assuming all prior inconsistent statements are hearsay — when used solely for impeachment (not for truth), they are non-hearsay; when given under oath at a proceeding, they are substantive non-hearsay under 801(d)(1)(A).
Memory Aid
Impeachment toolkit: 'BICCS-P' — Bias, Inconsistent statements, Character for untruthfulness, Contradiction, Sensory defects, Prior convictions.