Wisconsin Statutes Evidence (Ch. 901 to 937) § 901.04. Preliminary questions

(1) Questions of admissibility generally.Preliminary questions concerning the qualification of a person to be a witness, the existence of a privilege, or the admissibility of evidence shall be determined by the judge, subject to sub. (2) and ss. 971.31(11) and 972.11(2). In making the determination the judge is bound by the rules of evidence only with respect to privileges and as provided in s. 901.05.

(2) Relevancy conditioned on fact.When the relevancy of evidence depends upon the fulfillment of a condition of fact, the judge shall admit it upon, or subject to, the introduction of evidence sufficient to support a finding of the fulfillment of the condition.

(3) Hearing out of the presence of a jury.Hearings on any of the following shall be conducted out of the presence of the jury:

(4) Testimony by accused.The accused does not, by testifying upon a preliminary matter, subject himself or herself to cross-examination as to other issues in the case.

(5) Weight and credibility.This section does not limit the right of a party to introduce before the jury evidence relevant to weight or credibility.