613(b): Exposing Bias

Rule 613. Witness's Prior Statement and Bias or Interest

(b) Witness’s Bias or Interest.

(1) Foundation Requirement. When examining a witness about the witness’s bias or interest, a party must first tell the witness the circumstances or statements that tend to show the witness’s bias or interest. If examining a witness about a statement—whether oral or written—to prove the witness’s bias or interest, a party must tell the witness:

(A) the contents of the statement;
(B) the time and place of the statement; and
(C) the person to whom the statement was made.

(2) Need Not Show Written Statement. If a party uses a written statement to prove the witness’s bias or interest, a party need not show the statement to the witness before inquiring about it, but must, upon request, show it to opposing counsel.

(3) Opportunity to Explain or Deny. A witness must be given the opportunity to explain or deny the circumstances or statements that tend to show the witness’s bias or interest. And the witness’s proponent may present evidence to rebut the charge of bias or interest.

(4) Extrinsic Evidence. Extrinsic evidence of a witness’s bias or interest is not admissible unless the witness is first examined about the bias or interest and fails to unequivocally admit it.