California Expert Witness Guide

Publish in June 2026Raoul D. Kennedy and James C. Martin offer practical guidance on working with expert witnesses. Includes the latest statutory and case law on use of expert testimony. Subject matter of expert testimony Skill necessary to be expert Expert’s opinion: certainty required, testimony on ultimate issue, effect Types of experts Locating and retaining best expert, including a directory of resources Inspections, tests, experiments, and demonstrative evidence Expert’s deposition in civil case Preparing expert for deposition and trial Cross-examination of opposing experts at trial Experts and summary judgment process