CALIFORNIA EVIDENCE: CIVIL AND CRIMINAL
...Court Control of Proceedings
......Objections
.........Calls for Speculation or Conclusion
7 Cards On This Topic:

Witness must have personal knowledge of matters to which s/he testified.

Opinion testimony of nonexperts subject to limitation.

Expert qualifications include matters within his or her special knowledge and training.

Calls-for-speculation objection properly sustained where court was implicitly ruling question called for a conjectural lay opinion, which would not be helpful to a clear understanding of witness' testimony.

Examples of questions calling for improper conclusions.

Objection to question to victim calling for conclusion as to D's motive properly sustained.

Witness' testimony re opinion of cause of death improperly admitted.