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10.3: Perjury

  • Page ID
    69950
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    The crime of perjury is defined in section 118 of the California Penal Code.

    (a) Every person who, having taken an oath that he or she will testify, declare, depose, or certify truly before any competent tribunal, officer, or person, in any of the cases in which the oath may by law of the State of California be administered, willfully and contrary to the oath, states as true any material matter which he or she knows to be false, and every person who testifies, declares, deposes, or certifies under penalty of perjury in any of the cases in which the testimony, declarations, depositions, or certification is permitted by law of the State of California under penalty of perjury and willfully states as true any material matter which he or she knows to be false, is guilty of perjury.

    (b) No person shall be convicted of perjury where proof of falsity rests solely upon contradiction by testimony of a single person other than the defendant. Proof of falsity may be established by direct or indirect evidence.

    Witness testimony is important in a variety of settings. Juries depend on witness testimony to reach a fair and impartial verdict in civil and criminal trials, and grand juries depend on witness testimony to indict defendants for criminal conduct. Thus, modern laws of perjury are calculated to ensure that witnesses testify truthfully so that justice can be done in each individual case.

    In the Middle Ages, the witnesses were the jurors, so the criminalization of false witness testimony did not occur until the sixteenth century when the idea of a trial by an impartial jury emerged. The first common-law prohibition against witness perjury criminalized false testimony, given under oath, in a judicial proceeding, about a material issue. This definition was also incorporated into early American common law (Jrank.org, 2011).

    In modern times, every state prohibits perjury, as well as the federal government (18 U.S.C. § 1621, 2011). Most state statutes or state common law, in states that allow common-law crimes, define perjury as a false material statement (criminal act), made with the specific intent or purposely to deceive, or the general intent or knowingly that the statement was false, in a judicial or official proceeding (attendant circumstance), under oath (attendant circumstance) (Ga. Code tit. 16 § 16-10-70, 2011).

    Example of Perjury

    Marcus testifies that he did not see Lindsay walked out of the Macy’s department store without paying for the necklace because he does not want to admit that he was shopping for jewelry to buy his girlfriend. Anthony, who is Macy’s civil trial attorney, cross-examines Marcus, and forces him to admit that he saw Lindsay steal the necklace, and that he was lying previously. Marcus has most likely committed perjury in this example. Marcus made a false statement, under a validly administered oath, in a judicial proceeding, with knowledge of its falsity. Marcus’s statement was material because, if believed, it would have helped exonerate Lindsay in her civil case. In many jurisdictions, the trier of fact, which could be a judge or jury, determines whether or not the statement is material. Marcus’s admission that he was lying is not a retraction that could serve as a defense because it was not made until the lie was about to be exposed. Thus, all the elements of perjury appear to be present, and Marcus may be subject to prosecution for and conviction of this offense.81


    81University of Minnesota Libraries Publishing (2015)


    This page titled 10.3: Perjury was last modified on Sat, 03 Oct 2026 18:42:49 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by George Cartwright.