The trial court committed prejudicial evidentiary error in precluding defense expert Black from testifying regarding Plaintiff’s mental competence. The fact that Black did not personally examine Plaintiff did not affect the admissibility of the evidence but merely went to the weight of Black’s testimony.
Various case law authorities have held that an expert’s testimony based in large part on reports by others rather than upon the expert’s own personal observations or of other persons displaying the syndrome may affect the weight of his testimony but does not render the testimony inadmissible if those reports meet the standard of reasonable reliability. [People v. Brekke (1967) 250 Cal.App.2d 651, 661-662, People v. Phillips (1981) 122 Cal.App.3d 69, 85].
In the present action, Black had more than minimum acquaintance with the case in which he was called to testify. As noted, Black reviewed Plaintiff’s medical records, other expert reports and over 15 hours of Plaintiff’s videotaped deposition testimony. Therefore, Black established a solid foundation for his testimony. The trial court’s exclusion of Black’s expert opinion regarding Plaintiff’s mental competence was erroneous. |