Can an expert give an opinion on whether a witness is telling the truth?

(1994) 8 Cal.4th 1060, 1124-1125; see People v. Williams (1998) 17 Cal.4th 148, 162 [abuse-of-discretion review asks whether ruling in question falls outside bounds of reason under applicable law and relevant facts].)

An "expert is not allowed to give an opinion on whether a witness is telling the truth because the determination of credibility is not a subject sufficiently beyond common experience that the expert's opinion would assist the trier of fact. [Citations.]" (People v. Long (2005) 126 Cal.App.4th 865, 871; see also Evid. Code, 801, subd. (a).)