Bias impeachment reaches financial interest, relationship to a party, employment, prior litigation positions, and hostility. Extrinsic evidence is permitted, unlike character impeachment for untruthfulness.
No foundation predicate is strictly required.
Alternative Names:
Evidence of Bias|Interest Evidence
Why it Matters?
Bias is the most effective impeachment because extrinsic evidence is permitted and no rule limits the inquiry, unlike character impeachment confined to reputation and opinion. Expert compensation, the volume of prior work for the retaining side, and the percentage of income from litigation are the standard subjects. Establishing the financial relationship quantitatively is more persuasive than characterizing the witness as a hired advocate.
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Frequently asked questions
Why is bias the strongest impeachment?
What is most persuasive on expert bias?
