Section 791 Of Article 2. Attacking Or Supporting Credibility From California Evidence Code >> Division 6. >> Chapter 6. >> Article 2.
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. Evidence of a statement previously made by a witness that is
consistent with his testimony at the hearing is inadmissible to
support his credibility unless it is offered after:
(a) Evidence of a statement made by him that is inconsistent with
any part of his testimony at the hearing has been admitted for the
purpose of attacking his credibility, and the statement was made
before the alleged inconsistent statement; or
(b) An express or implied charge has been made that his testimony
at the hearing is recently fabricated or is influenced by bias or
other improper motive, and the statement was made before the bias,
motive for fabrication, or other improper motive is alleged to have
arisen.