Rule 705. Disclosure of facts or data underlying expert opinion.
The expert may testify in terms of opinion or inference and give reasons therefor without prior disclosure of the underlying facts or data, unless the court requires otherwise. The expert may in any event be required to disclose the underlying facts or data on cross-examination.
History: Ad. Sup. Ct. Ord. 12729, Dec. 29, 1976, eff. July 1, 1977; amd. Sup. Ct. Ord. June 7, 1990, eff. June 7, 1990.
Structure Montana Code Annotated
Chapter 10. Montana Rules of Evidence
Part Article VII. Opinions and Expert Testimony
Rule 701. Opinion testimony by lay witnesses
Rule 702. Testimony by experts
Rule 703. Basis of opinion testimony by experts
Rule 704. Opinions on ultimate issue
Rule 705. Disclosure of facts or data underlying expert opinion