Evidence: Witnesses, Personal Knowledge, and Purposes of Examination

Rule 601. Competency to Testify

Every person is competent to be a witness unless these rules provide otherwise. But in a civil case, state law governs the witness’s competency regarding a claim or defense for which state law supplies the rule of decision.

Rule 602. Need for Personal Knowledge

A witness may testify to a matter only if evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may consist of the witness’s own testimony. This rule does not apply to a witness’s expert testimony under Rule 703.

Rule 611: Mode and Order of Examining Witnesses and Presenting Evidence

(b) Scope of Cross-Examination. Cross- examination should not go beyond the subject matter of the direct examination and matters affecting the witness’s credibility. The court may allow inquiry into additional matters as if on direct examination.

(c) Leading Questions. Leading questions should not be used on direct examination except as necessary to develop the witness’s testimony. Ordinarily the court

should allow leading questions:

(1) On cross-examination; and (2) when a party calls a hostile witness, an adverse party or a witness identified with an adverse party.

Rule 103. Rulings on Evidence

(a) Preserving a Claim of Error. A party may claim error in a ruling to admit or exclude evidence only if the error affects a substantial right of the party and:

(1) if the ruling admits evidence, a party, on the record:

(A) timely objects or moves to strike; and

(B) states the specific ground, unless it was apparent from the context; or

(2) if the ruling excludes evidence, a party informs the court of its substance by an offer of proof, unless the substance was apparent from the context.

(b) Not Needing to Renew an Objection or Offer of Proof. Once the court rules definitively on the record — either before or at trial — a party need not renew an objection or offer of proof to preserve a claim of error for appeal.

(c) Court’s Statement About the Ruling; Directing an Offer of Proof. The court may make any statement about the character or form of the evidence, the objection made, and the ruling. The court may direct that an offer of proof be made in question-and-answer form.

(d) Preventing the Jury from Hearing Inadmissible Evidence. To the extent practicable, the court must conduct a jury trial so that inadmissible evidence is not suggested to the jury by any means.

(e) Taking Notice of Plain Error. A court may take notice of a plain error affecting a substantial right, even if the claim of error was not properly preserved.