California · Evidence Code
EVID §702: (a) Subject to Section 801, the testimony of a witness concerning a particular matter is inadmissible unless he has personal knowledge of the matter.
What this law says, in plain English
A witness's testimony about a matter is not allowed in court unless the witness has direct, personal knowledge of that matter.
Read the full statutory text
(a) Subject to Section 801, the testimony of a witness concerning a particular matter is inadmissible unless he has personal knowledge of the matter. Against the objection of a party, such personal knowledge must be shown before the witness may testify concerning the matter. (b) A witness’ personal knowledge of a matter may be shown by any otherwise admissible evidence, including his own testimony.
Verify at the official source: California legislative text
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This page is legal information, not legal advice. Code text is sourced from official publications and may lag amendments — always confirm at the official source linked above. Plain-English summaries and relationship data are AI-derived and reviewed on an ongoing basis; verify with a licensed attorney before acting.