Is testimony expressing opinion on legal question of probable cause inadmissible as improper expert opinion?

California, United States of America


The following excerpt is from Kley v. Gwilliam, A143943 (Cal. App. 2016):

"Williams v. Coombs (1986) 179 [Cal.App.]3d 626, 638, [testimony expressing opinion on legal question of probable cause was inadmissible as improper expert opinion].

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