TESTIMONY BY EXPERTS (Rule 2:702(a)(i) derived from Code § 8.01-

401.3(A)) (a) Use of Expert Testimony. (i) In a civil proceeding, if scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education may testify thereto in the form of an opinion or otherwise. (ii) In a criminal proceeding, expert testimony is admissible if the standards set forth in subdivision (a)(i) of this Rule are met and, in addition, the court finds that the subject matter is beyond the knowledge and experience of ordinary persons, such that the jury needs expert opinion in order to comprehend the subject matter, form an intelligent opinion, and draw its conclusions. (b) Form of opinion. Expert testimony may include opinions of the witness established with a reasonable degree of probability, or it may address empirical data from which such probability may be established in the mind of the finder of fact. Testimony that is speculative, or which opines on the credibility of another witness, is not admissible. Adopted and promulgated by Order dated June 1, 2012; effective July 1, 2012. RULES OF SUPREME COURT OF VIRGINIA PART TWO VIRGINIA RULES OF EVIDENCE ARTICLE VII. OPINIONS AND EXPERT TESTIMONY