5.6.7.5 Facts Underlying the Opinion—Arizona and Federal Rule 705

• Jurisdiction: Arizona

Rule 705 allows an expert to testify on direct without disclosing the reasons for her opinion. The Rule allows that such disclosure may be required on cross-examination, or if the court requires it. Rule 705 reflects the attempt in the Arizona and Federal Rules of Evidence to streamline the presentation of expert testimony. Rules 705 and 703 are in somewhat of a conflict with Rule 56(e) of the Federal Rules of Civil Procedure, which requires that affidavits opposing summary judgment “set forth specific...