Rule text
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 in the form of an opinion or otherwise, if:
1. The testimony is based upon sufficient facts or data;
2. The testimony is the product of reliable principles and methods; and
3. The witness has applied the principles and methods reliably to the facts of the case.
Added by Laws 1978, c. 285, § 702, eff. Oct. 1, 1978. Amended by
Laws 2013, 1st Ex.Sess., c. 15, § 2; Laws 2013, 1st Ex.Sess., c. 15, § 3.
NOTE: Laws 2009, c. 228, § 18 was held unconstitutional by the Oklahoma Supreme Court in the case of Douglas v. Cox Retirement Properties, Inc., 2013 OK 37, 302 P.2d 789 (Okla. 2013) and repealed by Laws 2013, 1st Ex.Sess., c. 15, § 1.