California, United States of America
The following excerpt is from People v. Kirkorian, B207867 (Cal. App. 2/8/2010), B207867. (Cal. App. 2010):
Only relevant evidence is admissible. (Evid. Code, 351.) Relevant evidence is evidence having any tendency in reason to prove or disprove any disputed fact that is of consequence to the determination of the action. (Evid. Code, 210.) The test of relevance is whether the evidence tends "logically, naturally, and by reasonable inference" to establish material facts such as identity, intent, or motive. (People v. Williams (2008) 43 Cal.4th 584, 633-634.) The trial court retains broad discretion in determining the relevance of evidence. (Ibid.) The existence or nonexistence of a bias, interest, or other motive on the part of a witness ordinarily is relevant to the truthfulness of the witness's testimony. (Evid. Code, 780, subd. (f).)
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