The facts or data in the particular case upon which an expert bases an opinion or inference may be those perceived by or made known to the expert at or before the hearing. If of a type reasonably relied upon by experts in the particular field in forming opinions or inferences upon the subject, the facts or data need not be admissible in evidence in order for the opinion or inference to be admitted. Facts or data that are otherwise inadmissible shall not be disclosed to the jury by the proponent of the opinion or inference unless the court determines that their probative value in assisting the jury to evaluate the expert's opinion substantially outweighs their prejudicial effect. Added by Laws 1978, c. 285, § 703, eff. Oct. 1, 1978. Amended by Laws 2002, c. 468, § 55, eff. Nov. 1, 2002; Laws 2013, 1st Ex.Sess., c. 15, § 5; Laws 2013, 1st Ex.Sess., c. 15, § 6. NOTE: Laws 2009, c. 228, § 19 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Supreme Court in the case of Douglas v. Cox Retirement Properties, Inc., 2013 OK 37, 302 P.2d 789 (Okla. 2013) and repealed by Laws 2013, 1st Ex.Sess., c. 15, § 4.
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