Evidence Flashcards
authentication and chain of custody requirement
One of the general requirements for admissibility of real evidence is that it be authenticated; i.e., that it be identified as being what its proponent claims it is.
If the evidence is of a type that is likely to be confused or can be easily tampered with, the proponent of the object must present evidence of chain of custody. The proponent must show that the object has been held in a substantially unbroken chain of possession.
It is not necessary to negate all possibilities of substitution or tampering; rather, what is required is to show adherence to some system of identification and custody.
hearsay exception: felony convictions
Judgments of felony convictions are admissible in both criminal and civil actions to prove any fact essential to the judgment, whether the judgment arose after trial or upon a plea of guilty
properly authenticated copy of conviction fills that requirement
does not matter if it was result of guilty plea or a trial
learned treatises
learned treatises can be used either for impeachment or as substantive evidence.
Impeachment: the credibility of an expert witness may be attacked by cross-examining the expert on statements contained in any scientific publication that is established as reliable authority.
Reliability of a publication may be established by: (i) the direct testimony or cross-examination admission of the expert, (ii) the testimony of another expert, or (iii) judicial notice.
Substantive Evidence: exception to the hearsay rule for learned treatises applies (and they can be admitted as substantive evidence) if: (i) the expert is on the stand and it is called to his attention, and (ii) it is established as reliable authority (see above).
nonhearsay: effect on listener
a statement that would be inadmissible hearsay to prove the truth thereof may be admitted to show the statement’s effect on the listener or reader.
example: in negligence case, where knowledge of a danger is at issue, a person’s warning statement is admissible for the limited purpose of showing knowledge or notice on the part of a listener
hearsay exception: statement against interest
statements of a person, now unavailable as a witness, against that person’s pecuniary, proprietary, or penal interest when made are admissible as an exception to the hearsay rule
work product rule
work product is material created by a party or representative (like attorney) in anticipation of litigation.
an adverse party generally may not discover or compel disclosure of written or oral materials that fall under the work product definition
voice authentication
any person familiar with an alleged speaker’s voice may authenticate a recording of the voice by giving an opinion as to its identity
hearsay exception: dying declaration
a statement made by a now unavailable declarant, while believing her death was imminent, that concerns the cause or circumstances of what she believed to be her impending death are admissible
Criminal Cases: dying declarations are only admissible in homicide cases
Remember: the defendant need not actually die as a result of the circumstances giving rise to her belief of imminent death
judicial notice in criminal case
when a court takes judicial notice of a fact under the federal rules in a criminal case, the jury may, but is not required to, accept the fact noticed; thus, its effect is only to relieve the prosecutor of her burden of producing evidence on that fact
judicial notice in civil case
the fact noticed is conclusively established
who determines expert witness qualification?
judge determines whether someone qualifies as an expert
who determines whether a hearsay exception applies or not?
the judge determines it, not the jury, so you can object based on judge’s failure to make a preliminary ruling
refreshing recollection
rules of evidence allow a witness’s recollection to be refreshed by just about anything
witness may not read from the writing while he testifies; it is used solely to jog his memory.
Opposing Counsel Rights: opposing counsel is allowed to examine the item being used to refresh the witness’s testimony and may cross-examine the witness about it, he may not object to it
what information can expert witnesses rely on?
an expert may base her opinion on facts not in evidence that were supplied to her out of court or in court, and that are of a type reasonably relied upon by experts in that particular field in forming opinions on the subject
Facts or data upon which expert opinions are based may be derived from presentation at trial
And, the information need not be admissible
what information can lay witnesses testify to?
lay witnesses may testify as to anything that is rationally based in the witness’s perception
Remember: they may not give legal conclusions/opinions