OPINION
¶ 1 The state seeks special action relief from the trial court’s decision to conduct a Frye 1 hearing to determine the admissibility of actuarial data relied upon by experts in rendering opinions on recidivism in Sexually Violent Persons Act (“SVPA”) commitment proceedings. See Ariz.Rev.Stat. (“A.R.S.”) §§ 36-3701 to -3717 (Supp.2000). We conclude that the admissibility of the actuarial data and the expert opinion relying on such data is controlled by the Arizona Rules of Evidence and not Frye. We previously issued an order vacating the decision of the trial court granting a Frye hearing and now issue this opinion explaining our order.
BACKGROUND
¶ 2 Dozens of individuals in Maricopa County filed motions requesting
Frye
hearings to contest the admissibility of expert opinion testimony on recidivism based on actuarial instruments in SVPA hearings. These cases were consolidated for a determination on
Frye’
s applicability. The trial court, interpreting
Logerquist v. McVey,
¶ 3 In its petition for special action, the state contends that a Frye hearing is unnecessary because the actuaríais are concerned with general characteristics of sex offenders and are not “scientific” evidence subject to the Frye test of admissibility. In response, real parties in interest (“respondents”) contend that Frye applies because the use of risk assessment tools based upon actuarial data to predict future acts of sexual violence is not generally accepted within the mental health community and because its use as a predictive tool is highly experimental.
JURISDICTION
¶ 4 Acceptance of special action jurisdiction is highly discretionary.
See
Ariz. R.P. Spec. Act. Rule 3 Committee Note;
King v. Superior Court,
¶ 5 The admissibility of actuarially informed expert testimony on sex offense recidivism is an issue of statewide importance. At the time this action was filed, sixty-four individuals were awaiting trial under the SVPA at the Arizona Community Protection and Treatment Center (“ACPTC”), and forty-eight people are currently confined at the facility as sexually violent persons. Twenty-three others have been committed as sexually violent persons to ACPTC’s Less Restrictive Alternative. Requests for Frye hearings on the admissibility of testimony based upon actuarial evidence have also been made in several post-commitment cases under the SVPA. See A.R.S. § 36-3709(B) (permitting committed person to annually petition court for conditional release to a less restrictive alternative).
*324 ¶ 6 Moreover, Arizona trial courts have rendered inconsistent decisions on the necessity of subjecting this expert testimony to a Frye analysis. Because resolution of this issue will assist Arizona courts in the interpretation and implementation of the SVPA, we accept jurisdiction.
DISCUSSION
¶ 7 An SVPA commitment proceeding is initiated by the county attorney filing a petition in superior court alleging that an individual is a sexually violent person. A.R.S. § 36-3704(A). If, after reviewing the petition, the court finds probable cause to believe the person is sexually violent, it then orders that the person be detained pending trial. Id § 36-3705(A), (B). Upon request, the person is entitled to a probable cause hearing. Id. § 36-3705(0). If the court reaffirms its finding, it is required to select, a “competent professional” to evaluate whether the individual is a sexually violent person. Id. § 36-3705(G). 2 Each party may also select a competent professional to evaluate the person. Id. § 36-3703(A).
¶ 8 A sexually violent person is defined as follows:
“Sexually violent person” means a person to whom both of the following apply:
(a) Has ever been convicted of or found guilty but insane of a sexually violent offense or was charged with a sexually violent offense and was determined incompetent to stand trial.
(b) Has a mental disorder that makes the person likely to engage in acts of sexual violence.
Id. § 36-3701(7) (emphasis added). The state has the burden of proving beyond a reasonable doubt that the person meets the statutory definition. Id. § 36-3707(A). To meet the § 36-3701(7) requirement, the state routinely selects a psychologist or psychiatrist to evaluate the person. Many of these professionals employ actuarial instruments 3 to help form their opinions regarding the likelihood that an individual will commit future acts of sexual violence.
A. The Frye Standard in Arizona
¶ 9 In
Frye v. United States,
Just when a scientific principle or discovery crosses the line between the experimental and demonstrable stages is difficult to define. Somewhere in this twilight zone the evidential force of the principle must be recognized, and while courts will go a long way in admitting expert testimony deduced from a well-recognized scientific principle or discovery, the thing from which the deduction is made must be sufficiently established to have gained general *325 acceptance in the particular field in which it belongs.
Id. The court held the polygraph test results inadmissible because the test had not yet gained sufficient standing and scientific recognition among physiological and psychological authorities. Id.
¶ 10 The
Frye
test of “general acceptance” was adopted in Arizona in
State v. Valdez,
¶ 11
Frye
hearings are required before admission of expert testimony that relies on new scientific tests or techniques.
4
Such testimony is admissible only if “the proponent can first demonstrate that the underlying scientific principle from which the expert’s deductions are made has ‘gained general acceptance in the particular field in which it belongs.’ ”
State v. Bogan,
[a]ny technique that in its application was likely to have an enormous effect in resolving completely a matter in controversy had to be demonstrably reliable. Where, on the other hand, an expert opinion only helped a trier to interpret the evidence or was susceptible to evaluation from the trier’s own knowledge, it was received on a lesser showing of scientific reliability. Because “science” is often accepted in our society as synonymous with truth, there was a substantial risk of overweighting by the jury. The rules concerning scientific evidence appear to have been aimed at that risk.
Joseph M. Livermore et al., Law of Evidence § 702.02, at 279-80 (4th ed.2000).
¶ 12 In Arizona,
Frye
has usually been applied in cases involving the results of physical scientific tests.
See, e.g., Valdez,
¶ 13 In a variety of other situations, however,
Frye
has been found inapplicable.
See, e.g., State v. Roscoe,
*326
¶ 14 In
Daubert v. Merrell Dow Pharmaceuticals, Inc.,
¶ 15 In
Logerquist v. McVey,
our supreme court responded to these cases by reaffirming the continuing vitality of the
Frye
rule in
Arizona. 196 Ariz.
at 489, ¶ 57,
¶ 16 On special action review, the Arizona Supreme Court concluded that
Frye
was inapplicable and vacated the order excluding the expert testimony.
Id.
¶ 6,
B. Application of Frye/Logerquist To Testimony Based On Actuarial Data
¶ 17 We now consider the applicability to this case of the
Frye
rule, as clarified in
Logerquist.
The trial court correctly observed that the experts testifying in most SVPA cases do not base their testimony on actuarial data created from their personal experience or knowledge, but that they instead rely on data generated by the work of others. Then, relying on the distinction in
Logerquist
between experts who reach conclusions by inductive reasoning based on their own experience
(Frye
not applicable) and those whose conclusions are deduced from the application of novel scientific principles or techniques developed by others
(Frye
*327
applicable),
¶ 18 Although the trial court’s focus on the inductive-deductive dichotomy in
Logerquist
is understandable, we believe it was too narrow.
Logerquist
certainly found
Frye
inapplicable to experience-based testimony, but it also reiterated that expert behavioral evidence was beyond Frye’s reach.
See id.
at 486, ¶ 47,
¶ 19 The
Logerquist
majority further distanced itself from
Daubert/Kumho
by virtually endorsing the line of authority in California that distinguishes between medical opinion and scientific evidence in applying
Frye. Id.
at 479, ¶ 29,
California distinguishes between expert medical opinion and scientific evidence; the former is not subject to the special admissibility rule of [People v. ]Kelly[ (1976)17 Cal.3d 24 ,130 Cal.Rptr. 144 , 549 P.2d 1240]-Frye. Kelly-Frye applies to cases involving novel devices or processes, not to expert medical testimony, such as a psychiatrist’s prediction of future dangerousness or a diagnosis of mental illness. Similarly, the testimony of a psychologist who assesses whether a criminal defendant displays signs of deviance or abnormality is not subject to Kelly-Frye.
Id.
As did
Logerquist, Wilson
held that a
Frye
hearing was not necessary before an expert could testify on the phenomenon of repressed childhood memory.
¶ 20
California v. Ward
— the original source of the above quote — is directly on point with this case and, as
Logerquist
commented regarding
Wilson,
“puts the matter quite well.”
Whether [the doctors] used clinical or actuarial models and whether they specifically followed the [Department of Mental Health] handbook are not reasons to exclude their testimony. Even if a difference of opinion exists among professionals on these matters, the experts were not restricted to one methodology or another. To repeat the statement taken from Stoll, we cannot dictate the expert’s journey into a patient’s mind. Instead the jurors could make their own judgment about the qualifications of the experts and the value of their opinions.
¶ 21 In
Stoll,
a child sexual abuse ease, the Supreme Court of California held that
Frye
was inapplicable to an expert’s opinion, based
*328
on an interpretation of test and interview results, that the defendant was unlikely to commit criminal sexual misconduct. In
State v. Varela,
we cited
Stoll
as support for our conclusion that
Frye
was inapplicable to testimony concerning general characteristics of child sexual abuse victims.
¶ 22 We believe the trial court misapplied
Logerquist
when it granted respondents’ request for a
Frye
hearing. Unlike DNA and other types of “scientific” evidence, these risk assessment tools do not have an aura of scientific infallibility. As respondents contend, and petitioners acknowledge, they are subject to interpretation and their predictive value is far less than 100%. In addition, the testifying expert must still explain to the fact-finder why he or she believes that a particular individual will likely re-offend or not re-offend. We perceive no reason why the trial court should be allowed to screen this evidence pursuant to
Frye
before it is presented to the jury, the ultimate arbiter of truth.
See Logerquist,
¶23 Based upon our understanding of
Frye
as interpreted by
Logerquist,
we conclude that the use of actuarial models by mental health experts to help predict a person’s likelihood of recidivism is not the kind of novel scientific evidence or process to which
Frye
applies. We hasten to add, lest our holding be misinterpreted, that we are not determining whether the proffered expert testimony is or is not admissible.
7
Applying
Logerquist,
we simply hold that Frye’s general acceptance test is inapplicable to the expert testimony here. The admissibility of such testimony, if challenged,
8
is governed by the Arizona Rules of Evidence including Rule 702 (testimony must assist trier of fact), Rule 703 (data upon which expert bases opinion must be of “a type reasonably relied upon by experts in the particular field”), and Rule 403 (Relevant evidence may be excluded if its “probative value is substantially outweighed by the danger of unfair prejudice, confusion of the issues, or misleading the jury.”).
See Logerquist,
CONCLUSION
¶ 24 For the foregoing reasons, we grant petitioner’s request for relief. We reverse the trial court’s order granting respondents’ motion for a Frye hearing and remand for further proceedings consistent with this opinion.
Notes
.
Frye v. United States,
. A.R.S. § 36-3701(2) provides:
"Competent Professional” means a person who is:
(a) Familiar with the state’s sexually violent persons statutes and sexual offender treatment programs available in this state, [and]
(b) Approved by the superior court as meeting court approved guidelines.
. Actuarial data are used to create a mathematical model that relates risk factors, e.g., marital status, offense type, victim type, to recidivism rates for a known group of sex offenders. The risk rate of each person is then “scored” on the various instruments by determining the presence or absence of risk factors. The resulting score is then compared with actual recidivism rates for the study participants with the same score. This tells the experts how each person compares with a known group of sex offenders with a known recidivism rate.
. If the scientific evidence that is challenged has been previously offered and received in evidence in other cases, a
Frye
hearing is necessary “only when the opposing party makes a timely request for such inquiry supported by authorities indicating that there may not be general scientific acceptance of the technique employed.”
State v. Harris,
. In response to Daubert and the many cases applying Daubert, including Kumho, Federal Rule of Evidence 702 was amended effective December 1, 2000, by adding three requirements for the admissibility of expert testimony. As amended, Rule 702 now reads:
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, 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.
(Emphasis added.) We note that the "reliable application" requirement is a significant addition to
Daubert
("The focus, of course, must be solely on principles and methodology, not on the conclusions that they generate.”
. Ward’s expert testified that it was more accurate to predict recurring sexually violent behavior by using an actuarial model.
Ward,
. Nor are we called upon to resolve whether the actuarial data should be admitted only for the limited purpose of disclosing the basis of the expert opinion. See Rule 703 and Comment thereto. See infra note 8.
. See Rule 104(a) ("Preliminary questions concerning ... the admissibility of evidence shall be determined by the court ____"); see also Rule 703 Comment ("The question of whether the facts or data are of a type reasonably relied upon by experts is in all instances a question of law to be resolved by the court prior to the admission of the evidence.”).
