801.
(a) If a witness is testifying as an expert, his the witness’s testimony in the form of an opinion is limited to such an opinion as is: that satisfies both of the following: (a) (1) Related Relates to a subject that is sufficiently beyond common experience that the opinion of an expert would assist the trier of fact; and fact.
(b) (2) Based on matter (including his Is based on matter, including the witness’s special knowledge, skill, experience, training, and education) education, perceived by or personally known to the witness or made known to him the witness at or before the hearing, whether or not admissible, that is of a type that reasonably may be relied upon by an expert in forming an opinion upon the subject to which his testimony relates, unless an expert is precluded by law from using such matter as a basis for his opinion. the witness’s testimony relates.
(b) (1) In a proceeding under the Family Code, evidence of a statement used to support the opinion of a witness testifying as an expert is not inadmissible as hearsay if the court, in its discretion, determines that the statement is reliable.
(2) In determining the reliability of a statement, a court shall consider the following:
(A) Whether the witness routinely relies upon similar statements in the witness’s professional capacity outside of the court.
(B) The expertise of the witness, including the witness’s experience, in evaluating the trustworthiness of the sources of information relied upon in forming the witness’s opinion.