GENERAL CONCEPTS
Accrediting or Bolstering Generally Prohibited
Exceptions to Rule Against Bolstering
Any Party May Impeach
Tip
IMPEACHMENT METHODS
Prior Inconsistent Statements
MED
Tip
When Admissible as Substantive Evidence
Foundation for Extrinsic Evidence
Tip
Exceptions to Foundation Requirement
Bias or Interest
MED
Evidence that a witness is biased/has an interest in outcome of case tends to show that witness has motive to lie.
Foundation for Extrinsic Evidence
Tip
Watch for facts indicating that foundation requirement for extrinsic evidence of bias/interest has been fulfilled. Evidence that is otherwise inadmissible (like arrests/liability insurance) may be introduced if relevant to bias, provided proper foundation is laid.
Sensory Deficiencies
Contradictory Facts
Opinion or Reputation Evidence of Untruthfulness
Conviction of Crime
HIGH
Type of Crime: Any Crime Involving Dishonesty or False Statement
Tip
Although many crimes are arguably dishonest in nature, cts interpret this category narrowly to include only crimes in the nature of “crimen falsi” (ex. perjury, false statement, criminal fraud, embezzlement, false pretense). Simple theft, is not
considered a crime of dishonesty/false statement. Look
for a crime that involves some “uttering/writing of false
words.”
Felony Not Involving Dishonesty or False Statement
Remote Convictions Generally Not Admissible
Court May Admit in Extraordinary Circumstances