What is the test for admitting opinions on guilt or innocence by a lay witness?

California, United States of America


The following excerpt is from People v. Cole, E055228 (Cal. App. 2013):

Torres (1995) 33 Cal.App.4th 37, 46-47.) "[O]pinions on guilt or innocence are inadmissible because they are of no assistance to the trier of fact[, because] the trier of fact is as competent as the witness to weigh the evidence and draw a conclusion on the issue of guilt." (Id. at p. 47.) A trial court's ruling concerning admitting a lay witness's opinion testimony is reviewed for an abuse of discretion. (People v. Thornton (2007) 41 Cal.4th 391, 429.)

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