Pеtitioner-Appellant Sharieff Imani Sal-lahdin, formerly Michael Pennington, 1 appeals from the district court’s denial of his federal habeas corpus petition brought pursuant to 28 U.S.C. § 2254. In his petition, Sallahdin lodged eleven challenges to his first degree murder conviction and death sentence. His appeal contests the district court’s disposition of each challenge, raising the following issues: (1) four challenges concerning the jury and whether Sallahdin was deprived of due process of law and a fair and impartial jury; (2) whether the information was constitutionally adequate; (3) whether the trial court’s failure to define life without parole for the jury was constitutional error; (4) whether the reference to post-arrest silence violated his constitutional rights; (5) whether the two aggravators applied to his sentencing are supported by sufficient evidence; (6) whether the continuing threat aggravator is unconstitutional because it is vague and applied in a standardless manner; (7) whether the jury instructions failed to inform the jury that it did not have to be unanimous to find and apply mitigating circumstances to his sentence; and (8) whether Sallahdin was deprived of admissible mitigation evidence concerning steroid-induced psychosis. This court has jurisdiction pursuant to 28 U.S.C. § 1291.
Sallahdin’s most troubling challenge concerns whether triаl counsel was ineffective for failing to present mitigating evidence of the effects of Sallahdin’s steroid use on his behavior at the time of the crime. After carefully examining the record, we are persuaded that, had this evidence been presented, there is a reasonable probability the outcome of the sentencing phase would have been different, i.e., that the jury would have imposed a sentence other than death. Because, however, we are not privy to trial counsel’s reasons for not presenting this evidence, and because we can envision circumstances where it would have been constitutionally reasonable for counsel not to introduce this evidence despite its potentially mitigative effect, we find it necessary to reverse and remand this case to the district court for an evi-dentiary hearing solely on this specific issue concerning trial counsel’s performance. As regards all other issues raised by Sal-lahdin, we affirm.
FACTS
The pertinent facts concerning the murder are undisputed as summarized by the Oklahoma Court of Criminal Appeals in the opinion disposing of his direct criminal appeal.
Pennington v. State,
That same morning, Lynn Smith stopped at the 7-Eleven to get some ice. Sallahdin was behind the counter and gave her a cup of ice. She did not see anyone else in the store. Upon leaving, she looked back and saw Sallahdin leave the store and drive away in a car. The following day, Sallahdin was taken into custody at his wife’s home in Akron, Ohio.
At trial, Sallahdin testified another man committed the murder. The jury convicted Sallahdin of first degree malice murder, which is punishable by death in Oklahoma. When the trial proceeded to the sentencing phase, the State sought the death penalty based on three aggravators: (1) Sallahdin posed a continuing threat to society; (2) he committed the murder to avoid arrest or prosecution; and (3) he knowingly created a great risk of death to more than one person. In addition to the guilt phase evidence about the crime, thе State presented evidence of threats Sallahdin made while incarcerated. The jury found all three aggravating circumstances. After Sallahdin presented his own testimony in mitigation and mitigating testimony from friends, family, commanders, peers and others who knew him; the jury determined the aggravating factors outweighed the mitigating evidence and fixed punishment at death.
On direct appeal, the Oklahoma Court of Criminal Appeals affirmed the conviction and death sentence, after striking the great risk of death to more than one person aggravator and reweighing the remaining aggravators against the mitigating evidence. That court later denied post-conviction relief.
Sallahdin v. State,
STANDARDS OF REVIEW
Because Sallahdin filed his federal habeas petition after the effective date of the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA), that Act governs this court’s review.
See Penny v. Johnson,
Under § 2254(d)(1), a federal court may grant a writ of habeas corpus only if the state court reached a conclusion opposite to that reached by the Supreme Court on a question of law, decided the case differently than the Supreme Court has decided a case with a materially indistinguishable set of facts, or unreasonably applied the governing legal principle to the facts of the petitioner’s case. “Under § 2254(d)(l)’s ‘unreasonable application’ clause ..., a federal habeas court may not issue the writ simply because that court concludes in its independent *1222 judgment that the relevant state-court decision applied clearly established federal law erroneously or incorrectly. Rather that application must also be unreasonable.” “In sum, § 2254(d)(1) places a new constraint on the power of a federal habeas court to grant a state prisoner’s application for a writ of habe-as corpus with respect to claims adjudicated on the merits in state court.” AEDPA also requires federal courts to presume state court factual findings are correct, and places the burden on the petitioner to rebut that presumption by clear and convincing evidence. See 28 U.S.C. § 2254(e)(1).
Walker v. Gibson,
When the state courts have not considered the claim on the merits and the federal district court made its determination in the first instance, the district court’s conclusions of law are subjected to
de novo
review and its findings of fact, if any, are examined for clear error.
LaFevers v. Gibson,
DISCUSSION
Failure to Excuse Juror for Cause
Sallahdin argues he was deprived of a fair and impartial jury when the trial court did not reopen voir dire after juror Lyle Kurtis Cable stated he could not be a fair juror, and then refused to remove him for cause. The parties had passed Juror Cable for cause. Later, during voir dire of other prospective jurors, he stated “I can’t see myself being a fair juror in this particular case.” Tr. Vol. 3 at 10. Immediately thereafter, the court held a bench conference and indicated that if both sides jointly moved to reopen voir dire, the motion would be granted. The State did not move to reopen. Defense counsel stated “I think we should hear what he has to say at least, Your Honor,” and the judge replied, “All right. Thank you all very much.” Id. The trial court did not reopen voir dire and denied Sallahdin’s later challenge for cause.
Refusal to Reopen Voir Dire
— The Oklahoma Court of Criminal Appeals rejected Sallahdin’s claim, stating “the manner and extent of voir dire examination rests within the sound discretion of the trial judge.”
Pennington,
“In a petition for habeas, our inquiry into the conduct of voir dire is limited to whether the trial court’s restriction on voir dire rendered the trial fundamentally unfair.”
Mayes v. Gibson,
Here, the parties examined Juror Cable thoroughly with specific questions regarding the death penalty. While he was being questioned on
voir dire,
he affirmatively stated he could be fair and impartial, would follow the court’s instructions, and would consider all three possible punishments. Both parties then passed Juror Cable for cause. Significantly, although he had four peremptory challenges remaining, Sallahdin did not use a peremptory challenge to remove Juror Cable. If Sallahdin believed he needed to make further inquiry to determine whether Juror Cable was biased and could not follow the law, he could have used one of his peremptory challenges to remove him from the panel. Based on these facts and our limited scope of review, we cannot say the trial court abused its discretion when it decided to disallow further inquiry. Sallahdin was not denied his right to a fair and impartial jury.
See Morgan,
Denial of Request to Remove Juror Cable for Cause — For similar reasons, Sallahdin’s claim of error concerning the trial court’s refusal to remove Juror Cable for cause must also fail.
It is a long settled principle of Oklahoma law that a defendant who disagrees with the trial court’s ruling on a for-cause challenge must, in order to preserve the claim that the ruling deprived him of a fair trial, exercise a peremptory challenge to remove the juror. Even then, the error is grounds for reversal only if the defendant exhausts all peremptory challenges and an incompetent juror is forced upon him.
Ross v. Oklahoma,
We agree with the district court that these affidavits merely represent brief, conclusory perceptions and opinions of these jurors, which do not reflect any misrepresentation by themselves or other jurors during
voir dire. See United States v. McVeigh,
Excusing Two Jurors and Failing to Remove Another for Cause
Sallahdin argues the trial court deprived him of a fair and impartial jury by remov *1224 ing for cause two jurors who had reservations about the death penalty, but who indicated they could still follow the court’s instructions and could consider the death penalty as a sentencing option. He also argues the trial court deprived him of a fair and impartial jury by failing to remove for cause another juror who stated he would not сonsider any penalty other than death for intentional murder. Thus, Sal-lahdin contends the jury was not impartial, but instead was death-positive. 2
It is well-settled that “ ‘a juror may not be challenged for cause based on his views about capital punishment unless those views would prevent or substantially impair the performance of his duties as a juror in accordance with his instructions and his oath.’ ”
Wainwright v. Witt,
Prospective Juror Brierton
— Sallahdin argues the trial court improperly refused to excuse Darrel K. Brierton for cause, forcing him to exercise a peremptory challenge to remove this juror. The Oklahoma appellate court determined the trial court properly refused to excuse this juror for cause, because he unequivocally stated he would follow the instructions, would consider all punishments, and would base his decision on the evidence.
Pennington,
Even if the trial court should have removed Juror Brierton for cаuse, Sallahdin cured any constitutional error when he used a peremptory challenge to achieve an impartial jury.
United States v. Martinez-Salazar,
Prospective Jurors Peck and Gerald — • Sallahdin argues the trial court improperly excused two jurors for cause. Robert Pruitt Peck, Jr., indicated that, although he believed he could be fair and impartial, he would not consider the death penalty due to his personal beliefs. He did equivocate by saying that maybe, in an extreme circumstance, he could consider the death penalty, and he could base his decision on the judge’s instructions and not on his personal opinion. Later, he indicated there must be multiple deaths for him to consider the death penalty. Finally, he indicated he would set aside his personal beliefs and follow the instructions.
Cora Elizabeth Gerald stated she did . not believe in the death penalty for any ease; nor did she believe she could set aside her personal feelings. Nonetheless, based on defense counsel’s questioning, *1225 she stated she could follow the judge’s instructions.
Examining the entirety of their
voir dire,
the Oklahoma Court of Criminal Appeals determined that even though both prospective jurors indicated they would try to follow the instructions, the bulk of their
voir dire
indicated they could not impose a death sentence.
Pennington,
We defer to a trial court’s finding a juror would be partial because such a finding turns on the juror’s credibility and demeanor — matters which the trial court is in the best position to assess.
Witt,
Again, given the deference we must accord the trial court under the applicable scope of review, it was reasonable for that court to conclude these prospective jurors’ beliefs would prevent or substantially impair their duties as jurors. Sallahdin has failed to rebut the trial court’s finding by clear and convincing evidence. See 28 U.S.C. § 2254(e)(1). Therefore, we affirm the district court’s denial of his petition for habeas relief on these juror issues.
State Exercise of Peremptory Challenge Against Black Juror
Sallahdin argues the State improperly used a peremptory challenge to remove Juror Claiborne Cecil Jones, Jr., a black man, without providing a sufficiently race-neutral reason to support the challenge. The prosecutor may not exercise a peremptory challenge on the basis of race.
Batson v. Kentucky,
The disposition of a
Batson
claim is a question of fact subjected to the standard enunciated in 28 U.S.C. § 2254(d)(2).
Weaver v. Bowersox,
Here, the prosecutor indicated he based the peremptory challenge primarily on Juror Jones’ reservations about imposing the death penalty. In addition, the prosecutor noted Juror Jones had possible pending traffic violations and he had been excused as a juror in another murder case after his brother had been murdered. The Oklahoma Court of Criminal Appeals determined this explanation was race-neutral.
Pennington,
The record supports a finding that the prosecutor’s proffered reasons were not
*1226
pretextual.
See, e.g., United States v. Barnette,
Failure to Remove Sleeping Juror
Sallahdin argues the trial court should have removed Juror McGee, who allegedly fell asleep during the defense presentation. Sallahdin first raised this claim in state post-conviction proceedings. The Oklahoma Court of Criminal Appeals deemed it waived.
Sallahdin,
In an attempt to overcome this procedural bar, Sallahdin asserts his appellate counsel was ineffective in failing to raise this claim on direct appeal. Sallahdin relies exclusively on a post-trial affidavit from the sleeping juror. Although she stated she was “on a lot of medication” and had trouble staying alert during the defense’s case due to the defense attorney’s “monotone voice,” she at no time stated that she actually fell asleep during any portion of the trial. Addendum to Appl. for Post Conviction Relief, Exh. 12. To the contrary, she stated: “I think that the judge noticed thаt I was having trouble staying alert.... The judge would usually call a recess and I’d become more alert and take my medication.”
Id.
In light of the obvious deficiencies in this affidavit, and in light of the fact there is no indication in the trial transcript that the juror ever fell asleep, there is clearly no basis to the claim.
See generally United States v. Carter,
Failure of Information to Allege Elements of First Degree Murder
Sufficiency of Information
— Sallahdin argues .the State violated his due process rights because the Information improperly failed to allege malice aforethought, an element of first degree murder, as required under the law in effect at the time of the crime.
See
Okla. Stat. tit. 21, § 701.7(A) (“A person commits murder in the first degree when that person unlawfully and with malice aforethought causes the death of another human being. Malice is that deliberate intention unlawfully to take away the life of a human being, which is manifested by external circumstances capable of proof.”). Sallahdin first raised this claim on direct appeal, after the appeal had been fully briefed, in a motion to present an additional issue based on an intervening change of law. Sallahdin argued that
Pickens v. State,
The Information provided:
[O]n or about the 21st day of October, 1991, MICHAEL L. PENNINGTON then and there being, did then and there, willfully, unlawfully, wrongfully, and feloniously commit the crime of: MURDER FIRST DEGREE in the manner and form as follows, to-wit: That the said MICHAEL L. PENNINGTON did unlawfully, wilfully and feloniously, without authority of law, and with a premeditated design to effect the death of one Bradley Thomas Grooms, a human being, did then and there kill one Bradley Thomas Grooms by means of a firearm loaded with powder and shot, held in the hands of the said defendant and with which he fired shot into the body of the said Bradley Thomas Grooms, causing mortal wounds in the body of the said Bradley Thomas Grooms, from which mortal wounds the said Bradley Thomas Grooms did languish and die.
D. Ct. Rec. Vol. 1 at 1.
In Oklahoma, an Information must contain “[a] statement of the acts constituting the offense, in ordinary and concise language, and in such manner as to enable a person of сommon understanding to know what is intended.” Okla. Stat. tit. 22, § 401(2). A challenge to the adequacy of the Information under Oklahoma law, however, is a question of state law, which this court has no power to address.
Johnson v. Gibson,
Considering the Information along with the material available at the preliminary hearing and through discovery, we conclude Sallahdin received sufficient notice of the charge against him. The specific intent element of first degree murder was sufficiently alleged by use of the words “premeditated design.”
Cf. Van White v. State,
Ex Post Fact
o—Sallahdin also argues that application of
Parker
violates ex post facto prohibitions because, in his view,
Parker’s
overruling of
Miller v. State,
We fail to see any due process problem arising out of the application of
Parker
to Sallahdin’s case. To begin with, we note that the decision in
Parker
had nothing “to do with the definition of crimes, defenses, or punishments.”
Collins v. Youngblood,
Even if we were to conclude otherwise, it is apparent after reviewing Oklahoma case law that the decision in
Parker
was foreseeable and defensible.
See Fultz v. Embry,
158
F.8d 1101, 1103
(10th Cir. 1998) (discussing the test for determining whether the retroactive application of a judicial decision violates due process). Since the early 1900s, Oklahoma statutes have required that an information “contain a statement of the acts constituting the offense, in ordinary and concise language, and in such manner as to enable a person of common understanding to know what is intended.”
Parker,
Failure to Define Life Without Parole
Sallahdin argues the jury instructions should have defined life without parole further, because post-conviction juror interviews revealed that if jurors had known he would spend the rest of his life in prison with a sentence of life without parole, some jurors would have selected that sentence. He maintains the trial court’s failure to instruct, and counsel’s failure to request an instruction, regarding parole ineligibility violates
Skipper v. South Carolina,
Sallahdin first raised this claim in post-convictiоn proceedings. The Oklahoma Court of Criminal Appeals therefore deemed it waived because Sallahdin could have, but did not, raise it on direct appeal.
Sallahdin,
Prosecutor’s References to Sallahdin’s Post-Arrest Silence
Sallahdin argues the prosecutor’s improper comments on his post-arrest silence denied him a fair trial. In
Doyle v. Ohio,
the Supreme Court held a prosecutor deprives a criminal defendant of due process by making improper comments about the defendant’s post-Miranda
4
silence.
According to Sallahdin, the prosecutor improperly asked Lieutenant Pfahl on direct examination if Sallahdin had invoked his right to an attorney during interrogation. Sallahdin first challenged this questioning in his petition for a writ of habeas corpus. Because the State does not raise any exhaustion or procedural bar concerns, we consider this portion of the claim on its merits, reviewing
de novo. See Moore,
Sallahdin fails to indicate how asking this question violated his right to remain silent. The right to an attorney is separate and distinct from the right to remain silent.
See generally Michigan v. Mosley,
Sallahdin further argues the prosecutor improperly asked Detective Mahamed when he first heard about Sallahdin’s involvement in gun-running and exchange of weapons. The record shows the Oklahoma Court of Criminal Appeals reasonably determined Sallahdin expressly waived his right to remain silent during his initial contact with police in Oklahoma.
Pennington,
Sallahdin also argues the prosecutor improperly cross-examined him by asking him if he ever told the Akron police that another man shot the victim and that man’s fingerprints would be on the shotgun, which was at Sallahdin’s home. He maintains the prоsecutor improperly asked him if it was accurate that he remained silent when Detective Mahamed asked him why this death occurred. Viewed in context, these questions were designed to elicit an explanation for a prior inconsistent statement, not to infer guilt from Sallahdin’s post-arrest silence.
Anderson,
The Oklahoma Court of Criminal Appeals also determined that even if the prosecutor’s isolated remarks were erroneous, they were harmless.
Pennington,
We may consider the following factors in assessing harmless error: (1)
*1231
the prosecutor’s use of the post-arrest silence; (2) whether the defense or prosecution pursued this line of questioning; (3) the amount of evidence indicating guilt; (4) the frequency and force of the reference; аnd (5) if the defense requested a mistrial or curative instructions.
See Canterbury,
The evidence of Sallahdin’s guilt was overwhelming. The prosecutor did not attempt to use this information to establish guilt, nor did he pursue further questioning after the trial court sustained defense objections. In addition, on cross-examination of Mahamed, defense counsel emphasized that Sallahdin remained silent when asked certain questions. Tr. Vol. 5 at 63-66. Thus, any error was harmless. 5
Sufficiency of the Evidence to Support the Aggravating Factors
Sallahdin argues insufficient evidence exists to support the jury’s findings that he intended to kill the victim to avoid arrest or prosecution and that he poses a continuing threat to society. In assessing sufficiency of the evidence, the relevant question is whether, after viewing all of the evidence in the light most favorable to the State, a rational factfinder could have found the existence of the aggravating factor beyond a reasonable doubt.
Lewis v. Jeffers,
Avoid Arrest or Prosecution Aggravator
— Sallahdin asserts, without discussion, that insufficient evidence exists to support this aggravator. We need not consider this undeveloped argument.
See Walker,
[Sallahdin] shot Grooms almost immediately upon entering the store. No evidence was presented that the victim posed any threat to [Sallahdin] or that he even attempted to defend himself. Once Grooms had been shot several times, [Sallahdin] did not go near him, but rather, attempted to rob the store by repeatedly shooting the cash register. Because he was unable to open the cash register, [Sallahdin] was forced to leave empty-handed.
Additional evidence to consider is that [Sallahdin] wore no disguise, nor made any attempt to conceal his identity, other than killing the only person he saw in the store. Furthermore, by the time the witness Lynn Smith entered the store for a cup of ice, [Sallahdin] had no means to shoot her as he had run out of ammunition.
Pennington,
Continuing Threat Aggravtor
— Sallahdin also contends that commis
*1232
sion of the crime, by itself, is insufficient evidence to show he would be a continuing threat to society. In Oklahoma, however, the continuing threat aggravator’s existence, as the Oklahoma Court of Criminal Appeals noted, may be based solely on the evidence of the calloused nature of the crime.
Pennington,
[Sallahdin] immediately shot the victim upon entering the store. Grooms was shot as a matter of. course in [Sallah-din’s] attеmpted robbery. Grooms was never given an opportunity to cooperate in any way to save his life. In addition to this evidence, other evidence was presented that [Sallahdin] had made threats of violence while in custody.
Pennington,
Constitutionality of Continuing Threat Aggravator
Tenth Circuit precedent forecloses Sallahdin’s argument that Oklahoma’s application of the continuing threat aggravator is unconstitutional.
See, e.g., Medlock v. Ward,
Mitigating Evidence Instruction
Sallahdin argues the mitigating instructions suggested the jury must find the mitigating factors unanimously, because they were “sandwiched” among the instructions requiring unanimity in finding the aggravating factors. However, he recognizes this court has rejected similar arguments.
See, e.g., Fox v. Ward,
Steroid-Use Evidence
Sallahdin argues the trial court erroneously denied him an opportunity to present mitigating evidence that he was experiencing psychiatric effects from anabolic steroid use at the time of the crime. According to Sallahdin, the steroids, taken to enhance his weight lifting and body building regimen, altered his normal behavior and therefore the trial court wrongly prevented him from explaining what transformed him from a disciplined soldier into a fleeing killer. He contends that if this steroid evidence had been admitted, he probably would not have receivеd a death sentence. He also argues his conviction and death sentence are constitutionally infirm because counsel rendered ineffective assistance in failing to investigate and present evidence of the effects of his anabolic steroid use on his behavior at the time of the crime. Apt. Reply Br. at 19-20.
Preclusion of Steroid Evidence by Trial Court — Prior to trial, Sallahdin disclosed that he intended to present the testimony of Dr. Harrison Pope, a psychiatrist and steroid expert. The State filed a motion in limine requesting that the trial court enter an order prohibiting any testimony concerning “Steroid Rage Syndrome.” At the hearing on the motion, Dr. John A. Call, a psychologist, testified for the State that “Steroid Rage Syndrome” is not generally accepted as a bona fide diagnosable *1233 syndrome. Tr. of Hear’g of May 4,1993 at 4-6,14.
During the hearing, Sallahdin’s counsel stated the defense intended to call Dr. Pope only at the sentencing phase to introduce expert testimony that steroid use may explain the change in Sallahdin’s personality, and did not necessarily intend to refer to “Steroid Rage Syndrome.” See id. at 18-19. The trial court granted the State’s motion in limine, limiting its decision to finding only that the State showed there is no scientific theory called “Steroid Rage Syndrome.” Id. at 19-20. The court acknowledged there may be other reasons steroid-use evidence could be admissible and ordered written notice of Dr. Pope’s testimony. Id. at 20, 30; D. Ct. Rec. Vol. 3 at 77. In sum, contrary to Sallahdin’s contention the trial court denied him the opportunity to present any steroid use testimony during either stage of the trial, the trial court precluded only expert testimony concerning “Steroid Rage Syndrome,” not all testimony, be it expert or otherwise, concerning the effects of steroid use on Sallahdin.
Sallahdin filed a discovery supplement withdrawing Dr. Pope as a possible first-stage witness and, in response to the trial court’s order, delineating Dr. Pope’s anticipated sentencing phase testimony. The supplement anticipated Dr. Pope would testify: (1) steroids caused manic symptoms while Sallahdin took them and depressive symptoms and impulse control disorder during his withdrawal from them; and (2) to a reasonable medical certainty, the change in Sallahdin’s behavior was attributable to steroid use. D. Ct. Rec. Vol. 3 at 70-73. The supplement also represented Dr. Pope would not testify that “Steroid Rage Syndrome” is a mental illness or that it was identified as such in the medical or scientific communities. Id. at 73.
Approximately one month before trial, in a motion to prohibit the State’s expert from examining Sallahdin, counsel again set forth his purpose for presenting expert testimony on the effect of steroids on Sal-lahdin. D. Ct. Rec. Vol. 3 at 92-96. The motion indicated steroid use was comparable to problems caused by alcohol consumption, was not a mental illness, and the steroid evidence would only be used as mitigating evidence during the sentencing phase of the trial to show the effects of steroid use on Sallahdin — not to show steroids caused him to commit the murder, or to lower the degree of homicide, or as a defense. Id. at 92, 93-94. Despite the court-ordered supplementation of Dr. Pope’s testimony and the motion delineating the intended use of the testimony, counsel failed to call on Dr. Pope to testify or to present any steroid evidence to the jury at either stage of the trial.
Sallahdin now argues on federal habeas that the trial court erred in precluding evidence concerning the effects of steroid use during the trial. Neither the trial court nor the state appellate court addressed this specific issue on the merits.
See Pennington,
The federal district court determined the trial court did not err in refusing to admit steroid-use evidence because: (1) “Steroid Rage Syndrome” was not shown to be a reliable theory at the time оf the *1234 hearing, under either Frye or Daubert; 7 (2) counsel specifically denied any intent to use the testimony during the guilt phase; and (3) counsel did not request permission to present the evidence at the sentencing proceeding. ROA, Vol. 1, Doc 27 at 5-6; 8-11. Although we agree with the district court’s determinations, the dispositive fact is that the trial court did not actually preclude presentation of evidence about the effects of steroid use on Sallahdin.
The trial court’s ruling precluded only evidence of “Steroid Rage Syndrome.” The court expressly left open the possibility of introducing other steroid evidence and ordered counsel to provide the State with clarification of the steroid expert’s probable testimony. Counsel subsequently provided a detailed discovery supplement containing the steroid expert’s anticipated testimony. D. Ct. Rec. Vol. 3 at 70-73. Counsel, however, did not attempt to present such evidence to the jury and did not ask the trial court for a ruling on its admissibility. Consequently, the trial court never ruled on the admissibility of the steroid use evidence and did not preclude Sallahdin from introducing such evidence at either stage of the trial. Accordingly, the trial court did not err as Sallahdin claims. See
Romano v. Gibson,
Ineffective Assistance of Counsel
— We now turn to Sallahdin’s claim that his trial counsel was ineffective because counsel failed
to
investigate and present evidence concerning the effects of steroid use to the jury. Sallahdin first presented this argument in post-conviction proceedings. The Oklahoma Court of Criminal Appeals determined the claim was barred because it did not turn on facts unavailable at the time of the direct appeal.
Sallah-din,
Even if the State had adequately addressed the procedural bar issue, we would not be bound by the Oklahoma Court of Criminal Appeal’s ruling. In order to prevail on a procedural bar claim, the State must demonstrate that the Oklahoma Court of Criminal Appeals could have resolved Sallahdin’s claim of ineffectivе assistance of counsel on direct appeal on the basis of the trial record alone.
See, e.g., McGregor v. Gibson,
Because the state courts did not address the merits of this ineffective assistance of counsel claim, we review the district court’s conclusions of law
de novo. LaFevers,
To prove deficient performance, Sallahdin must show “counsel’s representation fell below an objective standard of reasonableness.”
Id.
at 687-88,
To establish prejudice, Sallahdin must show that, but for counsel’s errors, there is a reasonable probability the result of the proceeding would have been different.
Strickland,
If the alleged ineffectiveness occurred during the sentencing phase, this court considers “whether there is a reasonable probability that, absent the errors, the sentencer ... would have concluded that the balance of aggravating and mitigating circumstances did not warrant death.”
Strickland,
Guilt Phase — In light of the overwhelming evidence of guilt and his present admission of guilt, Apt. Br. at 31-32, Sallah-din argues counsel’s presentation of an innocence defense was not a reasonable strategy. Rather, Sallahdin believes counsel should have learned about the impact of steroids on Sallahdin’s mental state at the time of the crime and defended based on steroid usage. If counsel had done so, Sallahdin believes the jury would have learned he was in an abnormal psychotic state at the time of the crime due to anabolic steroid use. Next, Sallahdin criticizes counsel for being unprepared at the motion in limine hearing and at trial, because he failed to establish the effects of steroid use. Sallahdin argues trial counsel should have presented testimony from Dr. Pope, questioned the State’s expert, Dr. Call, more vigorously, and presented more of the scientific evidence available at the time of the hearing. Id. at 32-40.
*1236
In addition, Sallahdin appears to argue he did not know how his steroid use would affect his behavior, a sort of involuntary intoxication defense.
Id.
at 36. To invoke the defense of involuntary intoxication, the defendant must produce sufficient evidence to raise a reasonable doubt as to the voluntariness of his intoxication. Involuntary intoxication results from fraud, trickery or duress of another, aсcident or mistake on defendant’s part, pathological condition, or ignorance as to the effects of prescribed medication.
Wooldridge v. State,
In addition, during the motion
in limine
hearing, trial counsel made a strategic de-cisión not to present the steroid use evidence during the guilt phase of the trial. Sallahdin has not shown “counsel’s representation fell below an objective standard of reasonableness.”
Strickland,
Even if counsel’s performance had been deficient, the federal district court dеtermined Sallahdin was not prejudiced because, among other things: (1) counsel thoroughly cross-examined Dr. Call; (2) Dr. Pope’s post-conviction affidavit did not indicate Sallahdin did not know the difference between right and wrong at the time of the murder; and (3) Dr. Pope’s affidavit did not establish steroid use alone caused Sallahdin to commit the murder. Rather, Dr. Pope merely indicated Sallahdin may have been affected by steroid use. ROA, Vol. 1, Doc. 27 at 16-17.
Our independent review of the record verifies the district court’s factual findings. The cases cited by Sallahdin concerning ineffective assistance of counsel during the
*1237
guilt phase are inapposite in light of these facts. Reviewing the district court’s conclusions of law
de novo, LaFevers,
Sentencing Phase
— In reviewing whether trial counsel’s representation in the sentencing phase of trial was constitutionally deficient, we must first determine whether the evidence was admissible during the sentencing phase.
Lockett v. Ohio,
Consistent with these holdings, the Supreme Court has indicated “that a state court may not apply a state rule of evidence in a per se or mechanistic manner so as to infringe upon a defendant’s constitutional right ... to present mitigating evidence in a capital proceeding.”
Paxton v. Ward,
This is not to say, however, that a trial court must admit any and all mitigation evidence proffered by a capital defendant. Review of the above-cited cases indicates that proffered mitigation evidence must be reliable and relevant to be admitted.
See, e.g., Green,
In his January 13, 1997, affidavit, Dr. Pope stated that, “[a]t the time of [Sallahdin’s] trial in 1993, a substantial and consistent scientific literature had already accumulated, showing that anabolic steroids could cause severe psychiatric effects ... in some individuals.” Post Conviction Addendum, App. 20 at 2. Although Pope conceded that the term “steroid rage syndrome” was “a popular term with no scientific acceptance,” he stated “it was [nevertheless] well recognized in the scientific community that anabolic steroids could cause severe psychiatric effects in some individuals.” Id.
With respect to Sallahdin in particular, Dr. Pope recognized he had no significant history of serious psychological disorders,' criminal behavior or violence before using steroids. Dr. Pope further stated:
Since 1987, when he started using [steroids], he has displayed characteristic psychiatric symptoms which are sometimes seen in individuals who are sensitive to the psychiatric effects of these drugs. Among specific symptoms he displayed during steroid exposure were manic symptoms (euphoria, irritability, grandiosity of delusional proportions, impaired judgment, and reckless behavior) and depressive symptoms during steroid withdrawal (depressed mood, loss of interest in usual activities, sleep and appetite disturbance, fеelings of guilt, psychomotor retardation, and pronounced suicidal impulses). It is clear from his psychiatric history that [Sallah-din] was one of those individuals who are unusually vulnerable to the psychiatric effects of steroids, and hence liable to experience severe behavioral changes as a result.
Id. at 1-2. Dr. Pope believed Sallahdin used anabolic steroids until only a few weeks, if not a few days, before the crime, and therefore “was suffering from the acute effects of steroids, or at the very minimum from the acute withdrawal effects of steroids, at the time of the crime.” Id. at 2. It was Dr. Pope’s opinion:
to a reasonable medical certainty, that [Sallahdin] had used anabolic steroids, and was experiencing prominent psychiatric effects from anabolic steroids at the time of the crime. As a result [his] behavior and judgement were markedly altered from those of his normal baseline personality at the time of the crime.
Id. at 3.
Applying the above-outlined standards to Dr. Pope’s proposed testimony, we conclude that the proposed testimony was admissible during the sentencing phase of the trial. In short, we are persuaded that Dr. Pope’s conclusions regarding the effects of anabolic steroids were based upon scientific knowledge (for purposes of
Daubert v. Merrell Dow Pharmaceuticals, Inc.,
Having concluded that Dr. Pope’s testimony was admissible, we now turn to application of the Strickland test. The federal district court found it unnec *1239 essary to decide whether trial counsel’s performance was constitutionally deficient because, in its view, Sallahdin was not prejudiced by the absence of Dr. Pope’s testimony:
First, the trial court properly excluded expert testimony regarding steroid use. Second, the steroid effects could have been viewed as an aggravating circumstance, rather than as mitigating evidence. (Citation omitted.) Use of steroids could have been viewed as an attempt by petitioner to become tough, powerful and macho, all of which support petitioner’s cold-hearted domination over a weaker store clerk solely for money. This portrayal of petitioner would not evoke sympathy from a jury sufficient to overcome the aggravating circumstances. Trial counsel fully advised the jury of the difference in petitioner’s personality, i.e., that he was under tremendous stress and that typically he was well-liked by his family, friends and peers. The jury merely found this insufficient to ovеrcome the crime.
ROA, Vol. 1, Doc. 27 at 18-19. Further, the federal district court noted Sallahdin could have personally testified at the sentencing phase about the effects of steroid use, but did not. Id. at 19. Finally, the federal district court found that the strength of the evidence against Sallahdin, the brutality of the crime, and evidence of additional threats he made during a period of pretrial detention would have overwhelmed any mitigating effect that the steroid evidence might have brought to the deliberations. Id.
We are persuaded that Dr. Pope’s proposed testimony is considerably stronger than the district court determined it to be. During the sentencing phase, Sallahdin presented testimony from family members, friends, his Army commander, and correctional officers at the jail where he was confined prior to trial. Generally speaking, this evidence indicated that Sallahdin (a) had a normal upbringing, (b) experienced success academically, athletically and (at least initially) with the military, (c) did not have a prior criminal record, (d) was non-violent, (e) was perhaps undergoing marital-related stress, and (f) was a good, quiet prisoner who did not cause any problems. In our view, evidence from Dr. Pope regarding the potential of steroid use to cause severe personality changes in the user could have explained how Sallahdin could have been transformed from an allegedly mild-mannered, law-abiding individual into a person capable of committing the brutal murder with which he was found guilty. 9 In addition to mitigating Sallahdin’s culpability in the crime, Dr. Pope’s testimony could have specifically helped to rebut one of the two remaining aggravators found by the jury: that there was a probability Sallahdin “would commit criminal acts of violence that would constitute a continuing threat to society.” Okla. Stat. tit. 21, § 701.12. If the jury believed Dr. Pope, it could well have rejected the future threat argument by concluding that Sallahdin’s crimes were an aberration in the overall context of his life that could be explained by his use of or withdrawal from steroids. Once the effects of the steroids passed from Sallahdin’s system, he arguably would no longer have represented a threat to his community. Assuming the *1240 jury determined that Sallahdin did not represent a continuing threat, the overall balance of aggravating and mitigating factors would have been substantially altered, leaving the jury to weigh Sallahdin’s mitigating evidence against a single aggravating factor.
Although we conclude there is a reasonable probability that the presentation of Dr. Pope’s testimony could have altered the outcome of the sentencing phase, wе are unable at this point to conclude that Sallahdin was denied his right to effective assistance of counsel and, in turn, his right to a fair trial. Instead, Sallahdin must also demonstrate that his trial counsel’s performance was constitutionally deficient, i.e., “that counsel’s representation fell below an objective standard of reasonableness.”
Strickland,
Notwithstanding our conclusions regarding the relative strength of Dr. Pope’s proposed testimony, we cannot say that presentation of a steroid-use defense was without risk of negative consequences, or was the only reasonable second-stage strategy that trial counsel could have adopted.
10
It is thus imperative to determine trial counsel’s reasons, or lack thereof, for presenting Dr. Pope’s testimony during the second-stage proceedings.
See Strickland,
Because the record on appeal is inadequate to allow us to properly conduct this inquiry, 11 we conclude it is necessary to remand this case to the district court to conduct an evidentiary hearing on the issue of trial counsel’s performance. More specifically, the purpose of the evidentiary hearing will be to determine trial counsel’s reasons, or lack thereof, for foregoing the use of Dr. Pope’s testimony during the sentencing phase. If trial counsel made a strategic decision not to use Dr. Pope’s testimony, the district court will then need to assess whether that was a constitutionally reasonable decision under the circumstances. If, however, it is established that trial counsel was neglectful, or otherwise erred, in failing to call Dr. Pope as a second-stage witness, then trial counsel’s performance cannot be deemed constitutionally reasonable. In turn, Sallahdin would be entitled to federal habeas relief *1241 in the form of a new sentencing proceeding.
CONCLUSION
After considering Sallahdin’s arguments on appeal, we are not persuaded that constitutional error infected the first stage of his trial. Likewise, we reject the majority of his argumеnts concerning his sentence. We do, however, have concerns regarding his claim that trial counsel was ineffective for failing to present steroid-use evidence during the second stage of trial. We AFFIRM in part, and REVERSE in part, and REMAND the case to the district court for an evidentiary hearing and further proceedings consistent with this opinion.
Notes
. Sallahdin formally changed his name.
. Again, Sallahdin cites to the affidavit of Juror Bryant to support his belief that the jurors who served were not entirely truthful about their attitude toward the three possible punishments. We reject this affidavit for the reasons discussed previously.
.
Pickens
was overruled by
Parker v. State,
.
Miranda v. Arizona,
. Sallahdin attempts to show any error was not harmless by the post-conviction affidavit of Juror Barbara Bowen, which indicated she was bothered by Sallahdin’s failure to tell law enforcement initially that there was another shooter. His failure to do so apparently influenced her perception of his truthfulness. We agree with the district court that this affidavit does not indicate whether the remarks elicited by defense cоunsel or the prosecutor concerned her. It therefore fails to establish error.
. This circuit has not resolved whether sufficiency of the evidence is a factual or legal question.
Hale,
.
Frye v. United States,
. Because the trial court was not given the opportunity to rule on the admissibility of the evidence concerning the effects of steroid use on Sallahdin, for the purpose of this ineffective assistance of counsel claim, we will assume, without deciding, the steroid-use evidence was admissible during the guilt phase. Although some courts have allowed presentation of steroid-use evidence by a defendant, the defense has met with limited success.
See, e.g., United States v. Palumbo,
. We disagree with the district court that Sal-lahdin's own testimony would have sufficed in this regard. In our view, it would have taken an expert witness such as Dr. Pope to adequately explain for the jury the psychological effects of steroid use and to further explain Sallahdin's alleged personality changes as described in Sallahdin's other anecdotal evidence.
. For example, it may have been reasonable for trial counsel, having asserted a defense of actual innocence during the first stage of trial, to have adopted a residual doubt strategy during the sentencing phase. Indeed, we note that the mitigating evidence actually presented by Sallahdin's trial counsel during the sentencing phase (e.g., Sallahdin's lack of a criminal record and his non-violent nature) was largely consistent with such a strategy.
. The trial record is silent regarding trial counsel’s reasons, or lack thereof, for not presenting Dr. Pope. The only evidence we have on this issue is an affidavit from trial counsel that was attached to the reply brief Sallahdin filed in support of his federal habe-as petition. The affidavit is extremely vague concerning counsel's reasons for not presenting Pope's testimony during the sentencing phase.
