Logical relevance rule
Evidence is logically relevant if it tends to be material to a disputed fact.
Legal relevance (balancing test)
Relevant evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice, confusion of issues, misleading the jury, or wasting time. (FRE 403; CEC 352)
CA Prop 8 (always list at top under Preliminary matters heading if prompted for CEC)
Public policy exclusions
**None of these are admissible to prove culpable conduct
*Purpose for all of these is to encourage behaviors for greater good of society
Personal knowledge of witness rule (competency)
Witness must have personal knowledge of the matter about which he is to testify and must declare that he will testify truthfully.
Objections to form of questioning
Present recollection refreshed rule
Allows any item to be used to refresh a witness’ memory. Once shown the item, the witness must then testify entirely from his refreshed memory (witness cannot read from the refreshing document).
Opinion testimony: Lay opinion
A lay opinion is admissible if it is based on the perception of the witness, it is helpful to the trier of fact, and NOT based on specialized or technical knowledge (witness must be qualified as expert before giving opinion of that nature).
**(e.g., estimating driving speed, value of property, identity of person, physical condition, familiarity of handwriting, etc.)
Opinion testimony: expert testimony
*Shorthand rule: Admissible if relevant and reliable.
Admissible if all are met:
(1) specialized knowledge will help trier of fact in understanding evidence
(2) witness is qualified as an expert by knowledge, skill, experience, training or education
(3) testimony based on sufficient facts or data
(4) testimony is product of reliable principles and methods.
**Daubert and Kelly not applied if expert testimony is NOT scientific.
FRE: Daubert std of reliability requires substance of expert’s testimony be
- Peer reviewed, published in sci journals, tested, known for low error rate, subject to reasonable level of acceptance
CEC: Kelly/Frye std of reliability requires
- Proponent must prove sci theory/technique has been generally accepted as valid and reliable in relevant sci field
(5) witness applied principles reliably to facts of case.
Atty-client privilege
C has a right not to disclose any confidential communication between A and C that was for purpose of facilitating legal services.
- C is holder
- Last until death (FRE) or execution of estate (CEC)
- Exceptions: crime fraud (comm used to further crime fraud), dispute with lawyer, reas. nec. to prevent SBH/death
Dr(physician)-patient privilege
No fed priv. Under CEC, doctor-patient privilege applies only to communications made to medical personnel for the purpose of medical diagnosis and treatment.
- Patient is holder.
- Exceptions: P puts his physical condition at issue, Dr’s assistance sought to aid wrongdoing, dispute between D and P
Psychotherapist-patient and social worker-client
There is a federal psychotherapist-patient privilege for confidential communications. Under CEC, there is a licensed psychotherapist-patient or social worker-client privilege for confidential communications.
Self-incrimination
5A provides that no person shall be compelled to be a witness against himself
Marital privileges (2 types)
Spousal immunity privilege (testimony)
Spouse of a crim. D may not be called as a witness or compelled to testify against her spouse in any criminal proceeding. CA says spousal immunity rule applies to ANY kind of proceeding, not just crim.
Marital confidential communications
A communication made between spouses while married is privileged. This privilege applies in criminal and civil proceedings.
- Holder: Both spouses can assert the privilege and one spouse may prevent the other from testifying.
- Duration: privilege survives marriage but only covers statements made during marriage.
- Exception: does not apply in actions between the spouses or in cases involving crimes against the testifying spouse or either spouse’s children.
*CA: privilege may be asserted to prevent ANYONE from testifying about a conf. spouse. comm., including eavesdroppers
CEC only privileges
3 forms of character evidence to prove someone’s character
CE in Civil court: character evidence rule
Character evidence is generally inadmissible to prove conduct in conformity with that character trait on a particular occasion.
CE in Civil court: character at issue exception
Character evidence IS admissible where character is “at issue” and is an essential element of the case. (e.g., defamation bc person’s character matters when assessing reputational damage)
CE in Civil court: FRE exception sexual assault or child molestation
Character evidence can be admitted in cases based on SA, DV, or child molestation (CEC does NOT have this exception).
CE in Civil court: rape shield provisions (generally disallow evidence of V’s past sex conduct)
CE crim. court rule
Where character evidence is admissible, the character trait must always be pertinent to the case, but rules of admission differ depending on whose character it is.
CE crim. court, D’s character general rule
Only D can “open the door” to evidence of a pertinent character trait (reputation or opinion evidence), but once opened, the prosecution may:
- Call a witness to rebut D’s claim of good character (R or O)
- Cross exam the D’s character witness (R, O OR SA)
*Prosecution can ask about specific bad acts but cannot introduce extrinsic evidence to prove it