Vii impeachment of witness a introduction 5 ways to

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VII. IMPEACHMENT OF WITNESS A. Introduction - 5 ways to impeach 1. Bias 2. Sensory or Mental Incapacity 3. By disposition untruthful a. cross-x about non-conviction misconduct b. cross-x about prior conviction c. testimony by character witness 4. Prior inconsistent statement 5. Contradiction 6. Can do above through either cross-x or extrinsic evidence 28
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B. NONSPECIFIC IMPEACHMENT 1. Bias and Motivation of W  (p. 589) - Can use extrinsic evidence to prove. a. Evidence of bias and motivation of a W is admissible.  D has constitutional right to  has opportunity to cross-x witness to show bias.   b. Advisory notes show that Rules 608 and 610 contemplate showing of bias.   c. U.S. v. Abel  (1984, p. 582) - Prosecutor wanted to show bias of D's witness by  introducing evidence that W was a member of Aryan Brotherhood, an organization  whose members "lie, cheat and steal" to protect its members.  Membership in this  group was relevant for showing of bias since goes to source and strength of bias. d. Experts can be cross-examined about fees to show bias.   2. Sensory and Mental Incapacity  (p. 591) a. Evidence to show sensory or mental incapacity is admissible through extrinsic  evidence or cross-x.  Evidence can include being under the influence of drugs or  alcohol, mental afflictions or serious illness, treatment or stays at mental institutions. 3. Lack of Character for Truth and Veracity  (p.594) a. Cross-x on Nonconviction  MISCONDUCT  - Rule 608(b) i. R.608(b) - Specific instances of conduct TO PROVE TRUTHFULNESS OR  UNTRUTHFULNESS. 1) CAN'T USE EXTRINSIC EVIDENCE - Specific instances of conduct of W  to support or attack credibility may not proved by extrinsic evidence.  Don't  want mini-trial. 2) CAN USE CROSS-X - Can ask about specific instances of conduct if  probative of truthfulness or untruthfulness if:   a. concerns W's character for truthfulness or untruthfulness, or b. concerning the character for truthfulness or untruthfulness of another W  as to which character the W being cross-examined has testified. ii. Counsel must have adequate basis to ask about such conduct.  Can't just make it  up. iii. Conduct must directly involve lies or deception to impeach to show lack of  truthfulness character.  Simons Inc. v. Pinkerton's Inc.  (p. 596)  Testimony about  specific instance of conduct (lie about lie detector test) on cross-x bearing on  character of truthfulness or untruthfulness is allowed.  Inference is not that W  lied, but that W made mistake of fact so testimony may have other errors.
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