What is relevant evidence that impeaches a witness by establishing dishonesty?

California, United States of America


The following excerpt is from People v. Banaag, C079952 (Cal. App. 2018):

5. The definition of " '[r]elevant evidence' " includes "evidence relevant to the credibility of a witness." ( 210.) However, evidence that impeaches a witness by establishing prior acts of dishonesty is considered "collateral" in that it " 'has no relevancy to prove or disprove any issue in the action.' " (People v. Rodriguez (1999) 20 Cal.4th 1, 9.)

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