Rule 606 - [Effective until 1/1/2025] Competency of Juror as Witness(a) At the trial. A member of the jury may not testify as a witness before that jury in the trial of the case in which he is sitting as a juror. If he is called so to testify, the opposing party shall be afforded an opportunity to object out of the presence of the jury. (b) Inquiry into validity of verdict or indictment. Upon an inquiry into the validity of a verdict or indictment, a juror may not testify as to any matter or statement occurring during the course of the jury's deliberations or to the effect of anything upon that or any other juror's mind or emotions as influencing the juror to assent to or dissent from the verdict or indictment or concerning the juror's mental processes in connection therewith. But a juror may testify about (1) whether extraneous prejudicial information was improperly brought to the jury's attention, (2) whether any outside influence was improperly brought to bear upon any juror, (3) whether there was a mistake in entering the verdict onto the verdict form, or (4) whether any juror discussed matters pertaining to the trial with persons other than fellow jurors. A juror's affidavit or evidence of any statement made by the juror may not be received on a matter about which the juror would be precluded from testifyingAmended Oct. 25, 2011, eff. 12/27/2011.