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Methods of Impeachment
Attack narrative capacity (highlight ambiguities in
testimony)
Attack perception
Attack memory
Attack sincerity
• 1.) Show prejudice, bias, interest, or corruption
• 2.) Show that the witness’s testimony is improbable
• 3.) Compare witness’s testimony to her prior
inconsistent statements
• 4.) Contradict witness’s testimony with established
facts
• 5.) Show that the witness has an untruthful character
• Offer reputation or opinion evidence
• Offer evidence of the witness’s prior
untruthful acts
* Prior convictions