California, United States of America
The following excerpt is from People v. Rios, 63 Cal.App.4th 1501, 75 Cal.Rptr.2d 184 (Cal. App. 1998):
Moreover, the law clearly permits "have you heard" questions of a witness to test the validity of the witness's opinion of a person's character. (People v. Hempstead (1983) 148 Cal.App.3d 949, 954, 196 Cal.Rptr. 412; People v. Hurd (1970) 5 Cal.App.3d 865, 879-880, 85 Cal.Rptr. 718.)
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