If a witness is not testifying as an expert, his testimony in the form of an opinion is limited to such an opinion as is permitted by law, including but not limited to an opinion that is:

(a) Rationally based on the perception of the witness; and

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Terms Used In California Evidence Code 800

  • expert: means a physician and surgeon, including a psychiatrist, or any person described by subdivision (b), (c), or (e) of Section 1010. See California Evidence Code 240
  • Law: includes constitutional, statutory, and decisional law. See California Evidence Code 160
  • Testimony: Evidence presented orally by witnesses during trials or before grand juries.

(b) Helpful to a clear understanding of his testimony.

(Enacted by Stats. 1965, Ch. 299.)