A jury found defendants Edward Sparks and Leonard Sparks, who are brothers, guilty of second degree robbery. The trial court denied probation and sentenced both defendants to state prison. On appeal from the judgment of conviction each defendant contends, first, that since the record is silent as to whether or not the court considered referring him to Youth Authority, we must presume that the court did not consider such referral, and further that such failure to exercise discretion to refer defendants to the Youth Authority under Welfare and Institutions Code section 1731.5 1 requires that we remand the case so that the trial court may exercise its discretion. Alternatively, defendants argue that the court abused its discretion in failing to refer them to the Youth Authority. The probation reports reveal that Leonard was 19 and Edward was 18 years of age at the time of apprehension. Neither defendant requested referral to the Youth Authority.
We turn, first, to the question whether the trial court has a duty to consider, sua sponte, referral to the Youth Authority in every case wherein the defendant qualifies for Youth Authority commitment. There are no cases dealing with this question. Adverting to section 1731.5 we note, preliminarily, *599 that, in the part pertinent to this case, it provides as follows: ‘ ‘. . . a court may refer to the authority any person convicted of a public offense who ... is found to be less than 21 years of age at the time of apprehension; . . . ” 2
A useful analogy may be drawn from the statutes dealing with commitments of mentally disordered sex offenders. (Former §§ 5500-5514, now §§ 6300-6318.) Here section 5501, like section 1731.5, provided that the court
may
certify certain defendants for a hearing on the question of sexual psychopathy when there is cause to believe such certification would be appropriate. Although the statutory language is thus permissive and the court has discretion in the matter, the case of
People
v.
Westbrook,
In the present case there is no indication that defendants are in need of commitment to the Youth Authority in the same sense that the defendant needed hospitalization in
Westbrook.
However, all the facts do indicate the
eligibility
of both defendants for Youth Authority commitment. We believe that this circumstance alone is enough to require the court to consider referring them to the Youth Authority. We are persuaded to this conclusion because the statutes in the area of Youth Authority commitments and the decisions construing them indicate a strong policy in favor of attempting to rehabilitate youthful offenders through the Youth Authority facilities whenever possible. Thus, section 1700 provides that “The purpose of this chapter is to protect society more effectively by substituting for retributive punishment methods of training and treatment directed toward the correction and rehabilitation of young persons found guilty of public offenses. To this end it is the intent of the Legislature that the chapter be liberally interpreted in conformity with its declared purpose.” This purpose is articulated as follows
*600
in
People
v.
Walker,
In light of the foregoing, we conclude that in every criminal case involving juveniles eligible for Youth Authority commitment, the court should, on its own motion if necessary, consider whether the defendant could benefit from referral to the Youth Authority. 3
Our next inquiry, then, is whether we may presume that the trial court fulfilled its duty in the face of a silent record. It is presumed that official duty has been regularly performed. (Evid. Code, § 664.) Such a presumption is one affecting the burden of proof (Evid. Code, § 660), the effect of which is to impose upon defendants the burden of proving that the trial court did not consider making such a referral. (Evid. Code, § 606.) The presumption that a court has regularly performed its official duties has been applied in other analogous areas of criminal law in cases that have applied Code of Civil Procedure section 1963, subdivision 15, the statutory predecessor of Evidence Code section 664. (See
In re Patterson,
In the instant case the record is silent as to whether the trial court considered referral to the Youth Authority and defendants did not request a referral. The record does disclose, however, that the trial court did read and consider the probation reports in relation to each defendant. These reports disclosed the respective ages of defendants, their prior records, a statement of the nature of the present offense, their family history and environment, and other social factors such as education and employment. Accordingly, the trial court considered matters relevant to the question of whether defendants should have been referred to the Youth Authority, since such reports are a proper source of information for exercising discretion under section 1731.5. (See
People
v.
Hutson,
Defendants argue that the trial court did not consider such referral because it did not prepare, sua sponte, some written memorandum or opinion to the effect that it had considered referring them and rejected that possibility. There is no such requirement under the Youth Authority Act or the Penal Code. (See People v. Hutson, supra, at p. 756.) The only requirement is that the court consider and determine the defendant’s eligibility for commitment to the Youth Authority. In the present case there is no showing by defendants that the trial court did not give due consideration to their referral to the Youth Authority. The presumption that the trial judge performed his official duty is, therefore, here applicable. This presumption, moreover, is buttressed by the fact that the trial court did read and consider the matters contained in the probation reports, which were a source of advice in exercising discretion under section 1731.5. Accordingly, we must conclude that such referral was duly considered and that the trial court determined that defendants were not suitable for the rehabilitation program of the Youth Authority.
Our final inquiry is whether the trial court abused its discretion in failing to refer defendants to the Youth Authority. No cases have been found holding that a failure to refer a defendant to the Youth Authority constitutes an abuse
*602
of discretion. One case,
People
v.
Walker, supra,
In
People
v.
Doyle, supra,
It is apparent that the few reported decisions in this area have not articulated any hard and fast standards. It appears, moreover, that each case must be governed by its own particular circumstances. In the present case, aside from the facts relating to the instant offense showing that defendants lured a cab driver into a deadend street and robbed him at the point of a gun, the probation reports, which recommended a denial of probation, indicate the following: Edward, who was 18 at the time of his apprehension, had a prior record of many juvenile offenses including bicycle theft, petty theft, joyriding, attempted rape and purse snatching, and had spent a total of 11 months at two separate boys’ camps. Leonard, who was aged 19 when apprehended and had worked at one time for a neighborhood youth corps, had a record of driving without a license, resisting arrest, and attempted auto theft, and was picked up on a charge of loitering while on bail awaiting trial on the present offense.
*603
From a review of the record before us in the instant case, we are satisfied, notwithstanding our predilections, that it cannot be held that the trial court abused its discretion. In view of defendants’ extensive prior records, the determination that they did not present hopeful prospects of rehabilitation under the aegis of the Youth Authority was not against reason. Since reasonable minds might differ as to defendants ’ suitability for the Youth Authority program, the trial judge acted within the area of his discretion. (See
Brown
v.
Gordon,
The judgments are affirmed.
Sims, J., and Elltington, J., concurred.
A petition for a rehearing was denied June 24, 1968, and appellants’ petition for a hearing by the Supreme Court was denied July 24,1968.
Notes
Unless otherwise indicated, all statutory references are to the Welfare and Institutions Code.
Both parties agree that defendants here qualified for commitment to the Youth Authority under section 1731.5, inasmuch as both were under 21 years of age at the time of their apprehension, were not sentenced to death, life imprisonment, or less than 90 days’ imprisonment, and were not granted probation.
Both parties agree that the court does not have a duty to refer either defendant to the Youth Authority. Since 1945, Welfare and Institutions Code section 1731.5 has provided that a court "may referV certain defendants to the Youth Authority, and the eases have all interpreted this language to be permissive rather than mandatory, that is, the court has discretion whether or not to refer a defendant to the Youth Authority. (See, e.g.,
People
v.
Doyle,
The opinion does not state any of the background facts.
