91 N.Y.2d 979 (1998)
A trial court has discretion in admitting or precluding evidence, but that discretion is limited by a defendant’s right to present a defense; it is an abuse of discretion to exclude material evidence that directly rebuts the prosecution’s theory of motive.
Summary
Terry Aska was convicted of assault and weapon possession. The prosecution argued Aska stabbed the victim, Knight, due to a prior “slapping incident” involving Knight’s girlfriend. Aska claimed self-defense. The trial court precluded Aska from calling a witness, Simms, who would have testified that the slapping incident never occurred. The Court of Appeals affirmed the conviction, holding the trial court did not abuse its discretion because Simms’s testimony was collateral. The dissent argued excluding Simms’s testimony was an abuse of discretion because it directly rebutted the prosecution’s theory of motive. This case highlights the importance of allowing a defendant to present evidence that disproves the prosecution’s asserted motive.
Facts
On August 21, 1995, Aska and Knight encountered each other in Brooklyn. Knight testified he calmly asked Aska about a “slapping incident” that allegedly occurred five days earlier between Aska and Knight’s girlfriend. Knight claimed Aska then stabbed him without provocation. Aska asserted Knight confronted him, yelling and swearing, and appeared to reach for a weapon in a bag. Aska claimed he stabbed Knight in self-defense, fearing for his life. The alleged “slapping incident” involved an argument between Aska and Knight’s girlfriend at a hospital, where Aska was visiting his girlfriend and newborn child. Aska denied slapping Knight’s girlfriend. He sought to call Dolores Simms, the mother of Aska’s girlfriend, who was present and would testify that no slapping occurred.
Procedural History
Aska was convicted of first-degree assault and fourth-degree criminal possession of a weapon in the Kings County Supreme Court. The Appellate Division affirmed the conviction. Aska appealed to the New York Court of Appeals, arguing the trial court erred by precluding Simms’s testimony. The Court of Appeals affirmed the Appellate Division’s order.
Issue(s)
Whether the trial court abused its discretion by precluding the testimony of a defense witness whose testimony would have directly contradicted the prosecution’s theory of the defendant’s motive for the crime.
Holding
No, because the witness’s testimony was collateral to the central issue of whether the defendant’s use of deadly force was justified. Therefore, the trial court did not abuse its discretion by precluding the witness’s testimony.
Court’s Reasoning
The Court of Appeals majority reasoned that the critical inquiry was whether Aska’s use of deadly force was reasonable under Penal Law § 35.15. The court stated that the alleged “slapping incident” was collateral because it was not relevant to establishing Aska’s state of mind or the reasonableness of his use of deadly physical force. The court cited People v. Miller, 39 N.Y.2d 543, 551, for the principle that a defendant’s state of mind is material when a justification defense is presented. The court also cited People v. Goetz, 68 N.Y.2d 96, 114-115, and People v. Wesley, 76 N.Y.2d 555, 559, emphasizing that the focus must be on the defendant and the circumstances confronting him at the time of the incident.
The court further reasoned that Simms’s testimony would not have aided Aska’s defense. The court stated that if Simms testified that Aska did not slap Knight’s girlfriend, it would detract from Aska’s theory that Knight was the initial aggressor. The court quoted People v. Miller, stating, “In our adversary system, it is important to rivet the jury’s attention on the real issues at trial without undue diversion to collateral matters having little or no bearing on the guilt or innocence of the defendant” (People v Miller, supra, at 551).
The dissent argued that Simms’s testimony was material and the trial court abused its discretion in excluding it. The dissent stated that Simms’s testimony would have gone to the heart of the People’s theory of Aska’s motive and that Aska was entitled to rebut the central premise of the People’s case. The dissent argued that the testimony was not collateral because it concerned more than the credibility of the People’s witnesses, citing People v. Hudy, 73 N.Y.2d 40, 57. The dissent emphasized that the People based Aska’s motive on the “slapping incident,” and Aska should have been able to present evidence to counter this theory.