CALIFORNIA EVIDENCE: CIVIL AND CRIMINAL
...Opinion & Scientific Evidence
......Lay Opinion
.........Improper Subjects
............Veracity; Credibility
4 Cards On This Topic:

Even assuming O's opinion concerning truthfulness of D's interview statement inadmissible, D could not have been prejudiced given that he himself admitted that version was untruthful.

Detective's testimony about interview techniques was not offering an opinion on D's credibility where testimony mirrored interview jury heard, including D's own admissions about lying and changing his account.

Lay opinion on veracity impermissible; lay witness may occasionally express opinion as to ultimate fact based upon own perception.

Witness may not express personal belief that dying declarant spoke truthfully.