Defendant David A. Goodrich was convicted of burglary, 13 V.S.A. § 1201(a), following a jury trial. Defendant appeals, claiming error in the admission at trial of evidence of his prior convictions. We hold that their admission was reversible error and remand for a new trial.
Early in the morning of February 3, 1987, David Hathaway was awakened in his home in Burlington by noises coming from the living room. Upon going downstairs he discovered defendant standing in the room holding numerous jackets. According to Mr. Hathaway’s testimony, defendant was shining a flashlight on a stereo system. The only other light in the room came from two television sets turned on without the volume. There was a fight, Mr. Hathaway’s roommate came down, and the two men managed to hold defendant on the floor while the police were called. During this time, defendant told the two men, according to their testimony, that he had been looking for a friend. The police arrived and arrested the defendant. He was wearing a jacket belonging to *369 Mr. Hathaway, which contained Mr. Hathaway’s wallet. Of the jackets he had been holding, all but one belonged to Mr. Hathaway or his roommates. About an hour later, a blood alcohol test performed on defendant revealed a reading of .231.
Defendant testified that he had visited several bars that evening, as he was feeling depressed over his brother’s recent death. He consumed considerably more alcohol than he was accustomed to. The last thing defendant claims to remember that night is leaving the Steer & Stein Restaurant; he claims not to remember the events at Mr. Hathaway’s house. His defense at trial was inability to form the requisite intent to commit larceny due to intoxication.
Before trial, defendant moved to prevent the introduction of his prior convictions. All occurred within the last 15 years, the most recent in 1981. They include the following: 1975, petit larceny; 1976, breaking and entering in the daytime; 1976, possession of stolen property; 1976, breaking and entering in the night; 1977, attempted breaking and entering in the daytime; 1980, breaking and entering in the daytime; 1980, attempted breaking and entering in the night; and 1981, concealment of stolen property. 1 The State sought to use these convictions to impeach defendant’s testimony that he was intoxicated and incoherent at the time of the offense. V.R.E. 609. The trial court denied defendant’s motion, and all prior convictions were deemed admissible at trial for purposes of impeachment. The State also argued that the prior convictions should be allowed under V.R.E. 404(b) to establish intent, motive, opportunity or lack of mistake or accident. The judge ruled that the prior convictions would be admissible solely for impeachment. 2
Defendant brought a second motion in limine seeking to prohibit the State from questioning defendant’s expert witness, Dr. William H. Farrell, on defendant’s criminal record. 3 The court de *370 nied this motion. Although not stated by the court or parties, this ruling may have been based on V.R.E. 705, which permits inquiry into the facts underlying an expert’s opinion.
At trial, defendant renewed his motion to exclude the prior convictions. The court again denied the motion and allowed into evidence the convictions listed above. Both defendant and Dr. Farrell then acknowledged the convictions in their testimony. 4 The jurors were instructed at the close of the case that they could use the information only to access the credibility of the defendant. The judge cautioned the jury not to use the prior convictions as evidence of defendant’s propensity to commit burglaries.
Defendant argues that the convictions were inadmissible for any reason. 5
I.
V.R.E. 609
On the question of impeaching defendant’s credibility, defendant’s argument is threefold. First, he claims that the trial court committed error as a matter of law in permitting impeachment with the convictions of breaking and entering and possession or concealment of stolen property. Defendant relies on
State
v.
LaPlante,
Second, defendant claims that the trial court abused its discretion under
State
v.
Gardner,
By statute, a prior conviction is admissible in evidence “to affect the credibility of a witness” only if the conviction occurred within fifteen years and the crime involved moral turpitude. 12 V.S.A. § 1608; V.R.E. 609.
6
The 15-year and moral-turpitude requirements merely establish the “outer limit to admissibility,” within which the trial court must exercise its discretion, by weighing the probative value of the evidence against its prejudicial effect. State v.
LaPlante,
Gardner
overruled this Court’s holding in
State v. Manning,
Admissibility [of prior convictions for impeachment] shall depend upon a determination by the court that the probative value of this evidence outweighs its prejudicial effect.
V.R.E. 609(a).
We recognized in
Gardner,
and emphasize again today, that impeachment by prior convictions is “extremely prejudicial to the defendant in a criminal case.”
Despite limiting instructions a jury is likely to conclude that a defendant with a criminal record is a criminal by nature and likely to be guilty of the offense presently charged. Or the jury may conclude that the defendant is a person who deserves punishment regardless of his guilt of the offense charged.
Id.
(citations omitted). Because of these dangers, when the witness to be impeached is the defendant in a criminal trial, it is “necessary for the trial court to exercise its discretion most carefully.”
Id.
at 460,
Gardner then listed other factors that should enter into the court’s decision whether to admit prior convictions. Every one of these factors points to exclusion of the convictions in the case at bar.
First, “[t]he court must consider the nature of the crime to be used for impeachment.”
*373
Second, the court must consider the length of the defendant’s criminal record. “An extensive recitation of the crimes for which the defendant has been convicted is likely to be highly prejudicial.”
Id.
at 461,
Third, the court should consider the length of time that has passed since the conviction sought to be admitted: “Older crimes are less relevant to the issue of the defendant’s credibility.”
Id.
at 461,
Finally, we stated in Gardner:
The court above all will have to evaluate the relative importance of the defendant’s testimony and the need for impeachment by prior conviction in each individual case. If the defendant has no means of defense other than his own testimony, and the fear of impeachment is likely to prevent him from testifying, a court may be reluctant to permit such impeachment. A court should more readily exclude evidence of prior convictions when there are other means of impeachment available.
Id. (citations omitted). Considering this factor in light of the defense theory in the present case again points to exclusion. Defendant maintained that he did not remember the events at David Hathaway’s apartment. He did not deny any of the facts introduced by the State; his defense was only that he had not the mental capacity to form the requisite intent. To place this defense persuasively before the jury, he needed to testify as to his previous experiences with alcohol, his depression that night relative to his brother’s recent death, his visits to several bars that evening, and his state of mind upon coming-to in the hospital. The State did not contradict defendant’s testimony; the thrust of the State’s argument was that defendant was capable of forming, and did form, the necessary intent to commit larceny. In support, *374 the State pointed to several facts — the television sets on for light, the flashlight pointed at the stereo, the jacket underneath defendant’s own jacket, the “story” defendant told Mr. Hathaway — to convince the jury of defendant’s high cognitive functioning that night. The defense therefore did depend on defendant’s own testimony, and the State amply demonstrated other means of impeachment.
These facts are in sharp contrast to the facts in
State
v.
Boucher,
where we affirmed the admission of prior convictions for impeachment.
In sum, the trial court either failed to apply or misapplied the
Gardner
criteria governing the admissibility of prior convictions that meet the statutory threshold. While we may assume compliance with
Gardner
when the record is silent,
State
v.
Jarrett,
*375 [I]t is quite apparent from the transcript below that the trial court . . . gave only “short shrift” to all but one of the Gardner criteria, i.e., whether each of the prior convictions involved falsehood. This is not adequate compliance with Gardner standards.
Id.
at 193,
While discretionary rulings will be upheld if there is a reasonable basis for the ruling, we will find error upon a showing that the court exercised its discretion “for reasons clearly untenable or to an extent clearly unreasonable.”
State
v.
Savo,
We do not reach defendant’s constitutional claim. Defendant would have us declare unconstitutional the impeachment of criminal defendants with prior convictions. In accordance with well established practice, we refrain from deciding the constitutional question since it is not necessary for the disposition of this case. See
State
v.
Patnaude,
At retrial, the State might seek to introduce defendant’s prior convictions under V.R.E. 705. Therefore, we will consider the admissibility of defendant’s prior convictions under that rule.
II.
V.R.E. 705
On appeal the State argues that it was permissible to inquire into Dr. Farrell’s knowledge of defendant’s prior convictions under V.R.E. 705. That rule provides:
The expert may testify in terms of opinion or inference and give his reasons therefor without prior disclosure of the underlying facts or data, unless the court requires otherwise. The expert may in any event be required to disclose the underlying facts or data on cross-examination.
The State relies on
State
v.
Smith,
The State’s reliance on these cases is misplaced. In both, it was not contested that the information sought to be elicited was relevant to the expert’s opinion, thus complying with Rule 705’s mandate “to disclose the underlying facts or data.” This Court’s conclusion was only that proper questioning under Rule 705 did not violate the rights asserted in those cases — confrontation of witnesses in Smith and the physician-patient privilege in Mecier.
This Court has held that “ ‘wide latitude should be allowed on cross-examination for the purpose of showing who and what the witness is, and that he is unreliable, prejudiced, or biased.’ ”
Smith,
In addition, the “wide latitude” of permissible cross-examination of expert witnesses is qualified by V.R.E. 403, under which evidence, even if relevant, may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice. While the balancing test of Rule 403 is a matter within the trial court’s discretion,
In re Nash,
Rule 403 requires a balancing of probativeness and unfair prejudice. The substantial prejudice to defendant in bringing his
*377
criminal record to the jury’s attention through the testimony of Dr. Farrell is no less than it was through his own testimony.
Gardner’s
central concern, that “a jury is likely to conclude that a defendant with a criminal record is a criminal by nature and likely to be guilty of the offense presently charged,”
Nor did the court adequately address the issue of probativeness. At best, the prior convictions might cast doubt on Dr. Farrell’s opinion that defendant was unable to form the specific intent to commit larceny on the night in question. But the convictions were old. There was no link between them and the current charge. See
State
v.
Hurley,
Even if the prior convictions qualified as relevant under Rule 402 — a question we need not reach — the trial court abused its discretion under Rule 403. Defendant’s prior convictions should not have been admitted into evidence for any purpose.
An error at trial does not warrant reversal unless the error is prejudicial.
State
v.
Nash,
Reversed and remanded for a new trial.
Notes
The offenses of breaking and entering in the daytime and the nighttime are no longer distinguished; both are subsuriied under the burglary statute. 13 V.S.A. § 1201.
The State concedes on appeal that the convictions were not admissible under V.R.E. 404(b).
Defendant had been referred to Dr. Farrell for a psychological evaluation concerning his state of mind at the time of the offense. He administered several tests, performed a mental status evaluation, and took a social and family history of defendant. Based on his findings, Dr. Farrell concluded that it was “quite likely that this man was experiencing a blackout at [a blood alcohol level of] *370 .231,” that defendant’s cognitive abilities at that level of consumption would be “[vjery seriously affected,” and that he probably did not possess the ability to form the necessary intent to commit a larceny.
As it happened, defense counsel brought out both defendant’s and Dr. Farrell’s knowledge of the prior convictions in her direct examination of the witnesses to “soften the blow.” Defendant suffered prejudice by the ruling just as if the convictions were first elicited in the State’s cross-examination of the witnesses. See
State
v.
Ryan,
Defendant raises a further claim on appeal. The evidence showed that one of the jackets defendant was holding when he was discovered in Mr. Hathaway’s living room did not belong to Mr. Hathaway or his roommates. Defendant claims that the prosecutor improperly implied to the jury that this fact suggested defendant had committed another burglary earlier that night, thereby depriving defendant of a fair trial. Because we reverse on the prior convictions issue, we do not reach the merits of this claim.
The Vermont Supreme Court on December 8,1988, substantially amended Rule 609. The amended version replaces the term “moral turpitude” — a concept which has spawned case law both turbid and turgid — with more precise and manageable standards for determining admissibility of prior convictions for impeachment. The new rule is effective March 1, 1989.
Effective March 1, 1989, V.R.E. 609(a) requires the trial court to “articulate on the record the factors considered in making its determination.”
This is true even though Rule 609 (Impeachment by Evidence of Conviction of Crime) is not, strictly speaking, the applicable rule. We noted in
Foy
that the trial court’s
Gardner
analysis is “similar to the balancing test of V.R.E. 403.”
