CALIFORNIA EVIDENCE: CIVIL AND CRIMINAL
...Opinion & Scientific Evidence
......Expert Testimony: In General
.........Expert Testimony Appropriate
............Jury Not Totally Ignorant
4 Cards On This Topic:

No abuse of discretion in finding FBI agent had sufficient training and experience in crime scene investigation to testify as expert, and "crime scene analysis and the signature crimes" was beyond common experience.

Officer entitled to give lay opinion that button on D's jeans removed by force, shedding light on circumstances of murder.

Jury need not be totally ignorant of subject matter to warrant admission of expert testimony.

If expert testimony will help, jury need not be wholly ignorant of subject matter.