
Impeachment of a witness refers to the process of discrediting or undermining the credibility of a witness during a trial. In federal court, Federal Rules of Evidence 607 provides that any party, including the defense, may attack the credibility of a witness by introducing evidence that reflects on the witness's character for truthfulness, prior inconsistent statements, bias, interest, or other reasons. This is allowed under varying circumstances in different jurisdictions, as long as the party impeaching the witness has a good faith basis for doing so.
| Characteristics | Values |
|---|---|
| Impeachment of a witness | The process of discrediting or undermining the credibility of a witness during a trial |
| Who can impeach a witness? | Any party, including the defense, can impeach a witness |
| Methods | Presenting evidence or asking questions that contradict the witness's testimony, reveal inconsistencies, or show bias or falsehoods |
| Federal Rules of Evidence | Rule 607 allows any party to impeach a witness; other rules and statutes may vary by state |
| Evidence used | Prior inconsistent statements, bias, interest, or other factors affecting credibility |
| Cross-examination | Allowed to challenge witness credibility, but must be related to the witness's character for truthfulness |
| Witness reinstatement | Possible with evidence of a prior consistent statement and justification for intervening inconsistency |
| Good faith basis | Required for impeaching a witness; the party must have a valid reason for doing so |
| Limitations | Impeachment cannot be used to present otherwise inadmissible evidence, and the witness's right to a fair trial must be considered |
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What You'll Learn

Impeachment by prior statement
Impeachment of a witness is the process of discrediting or undermining the credibility of a witness during a trial. This can be done by presenting evidence or asking questions that expose falsehoods, inconsistencies, or biases in their statements. Federal Rules of Evidence 607 allows any party to attack the credibility of a witness by introducing evidence that reflects on the witness's character for truthfulness, prior inconsistent statements, bias, interest, or other reasons.
The Federal Rules of Evidence have specific provisions regarding the use of prior statements for impeachment. Rule 613, for example, requires that the impeaching statement first be shown to the witness before it can be proved by extrinsic evidence. This provides the witness with an opportunity to explain and the opposing party a chance to examine the statement. However, this requirement has been modified to allow more flexibility in the timing and sequence of disclosing the prior statement.
Additionally, Rule 801(d)(1) excludes impeachment by prior statement from the category of hearsay, allowing it to be admitted as evidence. This is because impeachment by a prior statement is considered free from hearsay dangers, as it is not being used to prove the truth of the matter asserted, but rather to undermine the credibility of the witness.
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Impeachment by cross-examination
Impeachment of a witness refers to the process of discrediting or undermining the credibility of a witness during a trial. This is done by presenting evidence or asking questions that expose a bias, inconsistency, or falsehood in their statements. Impeachment by cross-examination involves asking specific questions to challenge the veracity of a witness and cast doubt on the reliability of their testimony.
Federal Rules of Evidence 607 provides that any party may attack the credibility of a witness. This can be done by introducing evidence that reflects on the witness's character for truthfulness, prior inconsistent statements, bias, or other relevant factors. For example, in United States v. Hurst, the Court held that cross-examination about specific acts of dishonesty that led to a conviction helped the jury evaluate the witness's credibility.
However, it's important to note that the scope of cross-examination is not unlimited. In United States v. Osazuwa, the Court held that a Rule 608(b) cross-examination should not be used to circumvent the restrictions of Rule 609. Additionally, when impeaching a character witness, questions are typically limited to asking if they have heard about any alleged dishonest acts committed by the character in question.
The rules and statutes governing impeachment vary across different jurisdictions. For instance, in California, a prior felony conviction can be used to impeach a witness's credibility unless the witness has been pardoned or relieved of penalties due to a finding of innocence or rehabilitation. Similarly, Federal Rule of Evidence 609(a) allows for attacking a witness's character for truthfulness with evidence of a criminal conviction if certain conditions are met.
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Impeachment by deposition
For example, a lawyer may use impeachment by deposition when listening to an adverse witness testify on direct examination. If the lawyer hears the witness make inconsistent statements about critical facts, they can refer to previous deposition transcripts to highlight these inconsistencies. This can be a powerful tool to undermine the credibility of the witness.
The use of impeachment by deposition is governed by specific rules, such as Rule 32 of the Federal Rules of Civil Procedure and Rule 806 of the Federal Rules of Evidence. These rules outline the circumstances under which deposition testimony can be used and how it can be admitted as evidence. It is important for lawyers to be familiar with these rules to effectively use impeachment by deposition.
Additionally, there are specific considerations when dealing with hearsay statements or prior convictions. For instance, Rule 609 defines when a party may use evidence of a prior conviction to impeach a witness, while Rule 806 allows for the impeachment of a declarant's credibility through inconsistent statements or conduct. These rules highlight the importance of ensuring a fair trial for all parties involved.
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Impeachment by extrinsic evidence
Impeachment of a witness refers to the process of discrediting or undermining the credibility of a witness during a trial. Federal Rules of Evidence 607 provides that any party may attack the credibility of a witness by introducing evidence that reflects on the witness's character for truthfulness, prior inconsistent statements, bias, interest, or other reasons.
Rule 608(b) states that the Rule's use of the term "credibility" has been interpreted to "bar extrinsic evidence for bias, competency, and contradiction impeachment since they too deal with credibility." The amendment clarifies that the Rule is intended to impose an absolute bar on extrinsic evidence only if the sole purpose for offering the evidence is to prove the witness's character for veracity. In other words, extrinsic evidence may be admissible if offered for other grounds of impeachment, such as bias or competency.
The admissibility of extrinsic evidence for impeachment purposes is further clarified by Rule 405, which generally prohibits the use of specific instances of conduct to attack or support a witness's credibility. However, there are two exceptions to this rule: (1) specific instances are admissible when they have resulted in a criminal conviction, and (2) specific instances may be inquired into on cross-examination of the principal witness or a witness testifying about the witness's character for truthfulness.
It is important to note that the term "credibility" has been replaced by the term "character for truthfulness" in Rule 608(b) for consistency. Additionally, the changes made to Rule 607 are stylistic only and do not intend to change any results in ruling on evidence admissibility.
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Impeachment by prior conviction
- Was punishable by death or imprisonment in excess of one year under the law under which the witness was convicted; or
- Involved dishonesty or false statement, regardless of the punishment.
The rule also provides that evidence of a prior conviction is usually limited to the name, time, place, and punishment for the offense. However, the court may allow more specific information if the defense "opens the door" to discuss the details.
It is important to note that the rule has been amended over time to address concerns about unfair prejudice and the potential for impeachment questions to embarrass witnesses. For example, the rule now provides that a conviction may not be used for impeachment purposes if it has been pardoned, annulled, or if the witness has been rehabilitated. Additionally, the rule specifies that convictions that have been reversed on appeal or pardoned are not admissible for impeachment purposes.
Prior convictions may be proved in two ways: first, evidence of the conviction may be elicited from the witness through questioning; second, the conviction may be established by public record during cross-examination or thereafter.
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Frequently asked questions
Impeachment of a witness refers to the process of discrediting or undermining the credibility of a witness during a trial.
Yes, Rule 607 allows the credibility of any witness to be attacked by the state or the defense, even if the witness was called to testify by that party.
Impeachment may be proved through extrinsic evidence, cross-examination, or by introducing evidence that reflects on the witness's character for truthfulness, prior inconsistent statements, bias, interest, or other reasons.
In federal court, Federal Rules of Evidence 607 provides that any party may attack the credibility of a witness. The Supreme Court has also held that a party can impeach a witness by cross-examining them about specific instances of conduct that show their lack of credibility.
Yes, one exception is when a party seeks to impeach a witness with a prior conviction that is less than 10 years old. In this case, Rule 609 states that evidence of such convictions shall be admitted on cross-examination to attack the witness's credibility.











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