Full opinion text
MATHESON, Circuit Judge. In August 2000, an Oklahoma state court jury convicted Clayton Lockett of 19 counts, including burglary, assault, rape, and first degree murder. He was sentenced to 2,285 years and 90 days of imprisonment for his non-capital crimes and sentenced to death for his murder conviction. The Oklahoma Court of Criminal Appeals (“OCCA”) affirmed Mr. Lockett’s convictions and sentence and later denied post-conviction relief. Mr. Lockett filed a petition for a writ of habeas corpus pursuant to 28 U.S.C. § 2254 in the United States District Court for the Western District of Oklahoma. He challenged his conviction and death sentence on 15 grounds. The federal district court denied relief but granted a certificate of appealability (“COA”) on seven grounds. Mr. Lockett asks this court to grant a COA on three additional issues. We affirm the district court’s denial of habeas relief on all grounds. We also deny Mr. Lockett’s request for a COA on additional grounds. I. BACKGROUND A. Factual History The OCCA outlined the facts of Mr. Lockett’s crimes, and “[w]e presume that the factual findings of the state court are correct” unless Mr. Lockett presents clear and convincing evidence otherwise. Fairchild v. Workman, 579 F.3d 1134, 1137 (10th Cir.2009); see also 28 U.S.C. § 2254(e)(1) (“[A] determination of a factual issue made by a State court shall be presumed to be correct. The applicant shall have the burden of rebutting the presumption of correctness by clear and convincing evidence.”). As set forth by the OCCA, the relevant facts are as follows: At around 10:30 p.m. on June 3, 1999, Bobby Bornt was asleep on the couch at his house in Perry, Oklahoma, when his front door was kicked in. Three men, [Petitioner], Shawn Mathis and Alfonzo Lockett, entered his house and immediately started beating and kicking him. Bornt recognized [Petitioner] because [Petitioner] had recently covered a tattoo for him. [Petitioner] was carrying a shotgun which he used to hit Bornt. After the beating, Bornt’s attackers used duct tape to secure his hands behind his back and they gagged him and left him on the couch while they ransacked the house looking for drugs. As Bornt lay restrained on the couch his friend, Summer Hair, approached the open door. She was pulled inside, hit in the face and thrown against a wall. One of the men put a gun to her head and ordered her to call to her friend, Stephanie Neiman, who was outside sitting in her pickup. When Neiman came inside, they hit her several times to get the keys to her pickup and the code to disarm the alarm on her pickup. The men put all three victims in the bedroom where Bornt’s nine-month old son, Sam, had been sleeping. Alfonzo Lockett came into the bedroom and got Hair. He took her into the bathroom where he made her perform oral sodomy on him. He then took her into Bornt’s bedroom where he told her to get undressed and he raped her. When he was finished, he left her there and [Petitioner] came into the bedroom. He raped her vaginally and anally and he made her perform oral sodomy on him. When he was finished, he told her to get dressed and she went back into Sam’s bedroom with the others. Alfonzo Lock-ett came into the bedroom and used duct tape to secure Hair’s and Neiman’s hands behind their backs. He also put tape across their mouths. [Petitioner] instructed Mathis to look in the garage for a shovel. When he returned with a shovel, the victims were loaded into Bornt’s and Neiman’s pickups. Bornt and his son were placed in his pickup with [Petitioner], Hair and Neiman were placed in Neiman’s pickup with Mathis and Alfonzo Lockett. They took off driving with [Petitioner] in the lead. They left Perry and drove to a rural area in Kay County. [Petitioner] stopped on a country road where he got out of the pickup he was driving and went over to Neiman’s pickup. He made Hair get out and go with him to a ditch where he raped her and forced her to perform oral sex on him. When he was finished, he took her back to Bornt’s pickup. While Hair was sitting in the pickup, Mathis got her and took her back to Neiman’s pickup where he made her perform oral sex on him. He grabbed her head and said, “In order for you to live, this is what you have got to do.” While stopped on the country road, [Petitioner] told Mathis to get the shovel and start digging. When Mathis was digging in the ditch, Bornt heard [Petitioner] say, “Someone has got to go.” Neiman was taken to the hole dug by Mathis and [Petitioner] shot her. The gun jammed and [Petitioner] came back up to the pickup to fix it. While he was doing this, Bornt could hear Neiman’s muffled screams. When the gun was fixed, [Petitioner] went back down to the ditch and shot Neiman again. While Mathis buried Neiman’s body, [Petitioner] and Alfonzo Lockett warned Bornt and Hair that if they told anyone they would be killed too. They then drove both pickups to another location where they left Neiman’s pickup. All of them rode back to Bornt’s house in his pickup. [Petitioner], Mathis and Alfonzo Lockett dropped off Bornt, his son and Hair at Bornt’s house and they left in Bornt’s pickup. The following day, Bornt and Hair told the Perry police what had happened. Neiman’s pickup and her body were recovered and [Petitioner], Mathis and Alfonzo Lockett were subsequently arrested. [Petitioner] was interviewed by the police three times. The first time he terminated the interview and asked for an attorney. He later reiniti-ated the interview and although he denied shooting Neiman during the second interview, he confessed to having killed her in a third interview. Lockett v. Oklahoma, 58 P.3d 418, 421-22 (Okla.Crim.App.2002). Mr. Lockett presents additional facts in his brief to challenge the OCCA’s inferences on several issues, which we address later as they become relevant to our discussion. B. Procedural History 1. Mr. Lockett’s Trial: Guilt Phase The State charged Mr. Lockett with 19 counts: Conspiracy (Count 1), First Degree Burglary (Count 2), Assault with a Dangerous Weapon (Counts 3, 4 and 5), Forcible Oral Sodomy (counts 6, 15, and 16), First Degree Rape (Counts 7, 8, 9, and 14), Kidnapping (Counts 10, 11, 12, and 13), Robbery by Force and Fear (Counts 17 and 18), and Murder in the First Degree (Count 19). a. The State’s Evidence At trial, the State introduced a videotaped confession by Mr. Lockett, in which he provided a lengthy and detailed narrative of the evening’s events. He confessed to going to Mr. Bornt’s home to rob him; to personally hitting and beating Mr. Bornt, Ms. Hair, and Ms. Neiman with his fists or with the shotgun; to binding the victims with duct tape; to planning to kill all three adult victims; to forcing them (along with the baby) to leave Mr. Bornt’s house and go to the country, where the adults were to be killed; to taking Ms. Neiman’s and Mr. Bornt’s trucks; to being the ultimate decision maker as to which victims would be killed; to instructing Mr. Mathis on how to dig the grave; to personally shooting Ms. Neiman while she cried; to threatening to kill them if they told anyone of his crimes; and to insisting that his accomplices bury Ms. Neiman when he knew she was still alive. Mr. Lockett denied sexually assaulting Ms. Hair at the house or at the murder site. He also denied any knowledge of Alfonzo Lockett sexually assaulting Ms. Hair, but he admitted knowing that Mr. Mathis had sexually assaulted her at the murder site. Mr. Lockett claimed to have done several things to help the victims. For example, he said that he held, comforted, and fed Mr. Bornt’s young son at the house and made sure that the child’s diaper was changed at the murder site. He said that he had massaged Mr. Bornt’s legs after removing the tape because they had become numb while he was bound. He also said that he and his accomplices had cleaned Mr. Bornt’s house when they returned from the country and that he had expressed concern about Mr. Bornt’s head injury and urged him to seek medical attention. Throughout the videotaped confession, Mr. Lockett’s demeanor was relaxed and conversational. He made no statements of remorse. The federal district court described the confession as “a step-by-step account of the evening,” which Mr. Lockett delivered “[w]ith clarity, detail and the absence of emotion.” Lockett, CIV-OB-734-F at 14. Mr. Lockett explained that he initially planned to kill all of his adult victims so that the police would not find out that he had violated his probation by leaving his home county. He said that he ultimately decided to kill Ms. Neiman because she said that she would tell the police about his crimes. He calmly spoke of watching his accomplices bury Ms. Nei-man while she was still alive, describing her coughing while the dirt hit her face. The surviving adult victims, Mr. Bornt and Ms. Hair, also testified. Their testimony was largely consistent with Mr. Lockett’s confession with respect to the crimes charged. Both victims described their experiences throughout that night. They told the jury that Mr. Lockett had beaten, bound, and gagged them and that he threatened to kill them. Both testified to hearing the men planning to kill them and take the baby to a shelter or to Mr. Bornt’s parents’ house. Ms. Hair testified to seeing one of the men hit Ms. Neiman multiple times. She testified that Ms. Nei-man was bleeding from a head injury after the beating. Mr. Bornt testified to seeing Mr. Lockett shoot Ms. Neiman twice and to hearing muffled screams from Ms. Nei-man in the few minutes that lapsed between the two shots. He testified that the men laughed about “how tough [Ms. Nei-man] was” when she did not die immediately after the first shot. Tr. IX at 1629. Ms. Hair testified that Mr. Lockett had sexually assaulted her multiple times, at the house and at the murder site. She testified that both of Mr. Lockett’s accomplices had sexually assaulted her. She told the jury that while assaulting her, Mr. Mathis had said “in order for you to live, this is what you have got to do.” Tr. X at 1746. The State introduced photographs of Mr. Bornt and Ms. Hair taken more than a week after the crimes. In the photographs, both victims’ faces and bodies are bruised. Both victims described to the jury how their injuries appeared immediately after the event. Mr. Bornt described bleeding from his injuries earlier in the evening, and Ms. Hair said that her eye had been swollen shut. Ms. Hair testified to losing consciousness more than once during the evening as a result of her head injury. Over Mr. Lockett’s objections, the State also introduced photographs of Ms. Nei-man’s body being recovered from the shallow gravesite. b. Mr. Lockett’s Lack of Defense Mr. Lockett’s trial counsel did not present a defense. In his opening statement, counsel told the jury that Mr. Lockett had no defense. He referred to the prosecutor’s statement that the jury would have “no doubt, not just beyond a reasonable doubt, but no doubt” of Mr. Lockett’s guilt and conceded that the prosecutor was right. Tr. VIII at 1263. Mr. Lockett contends that his trial counsel did not consult with him before making these statements to the jury. Counsel did, however, ask the jury to hold the State to its burden to prove every element beyond a reasonable doubt, stating that the initial guilt phase was still necessary because “[t]he law in Oklahoma does not allow me to come in here and tell you, as a jury, we have done it, this happened, now sentence us.” Id. at 1263. At closing arguments, trial counsel offered no argument with respect to the first degree murder charge. Mr. Lockett contends that his counsel conceded his guilt without notifying him of this planned strategy. The jury convicted Mr. Lockett on all 19 counts. 2. Mr. Lockett’s Trial: Penalty Phase The State sought the death penalty. During the penalty phase, the State alleged five aggravating circumstances: (1) Mr. Lockett had previous felony convictions “involving the use or threat of violence”; (2) he “knowingly created a great risk of death to more than one person”; (3) “the murder was especially heinous, atrocious, or cruel”; (4) the murder was committed to avoid or prevent “a lawful arrest or prosecution”; and (5) he was likely to commit future “acts of violence that would constitute a continuing threat to society.” Lockett, 53 P.3d at 421. a. The State’s Aggravating Evidence The State presented two witnesses who testified about Mr. Lockett’s prior conviction for burglary and a prior instance of witness intimidation. The State also presented testimony from five correctional officers regarding Mr. Lockett’s behavior in jail after his arrest and before his trial. One officer testified that Mr. Lockett had written several threatening letters. Some letters were addressed to friends outside jail in which Mr. Lockett suggested that his Crips gang should kill Mr. Bornt and Ms. Hair. He claimed to be tracking their movements and demonstrated this by providing accurate Social Security numbers, addresses, and other private information for Mr. Bornt and Ms. Hair. In another letter, written to a relative, Mr. Lockett made threats against Alfonzo Lockett for his cooperation with the investigation. All of the corrections officers who testified described Mr. Lockett’s misbehavior in jail, including weapons he made (some of which he voluntarily gave to guards) and threatening statements to guards. The jury heard about other letters written to jail personnel, in which Mr. Lockett falsely boasted that he had an IQ of 190 and a black belt in two martial arts, that he had stabbed multiple corrections officers and once started a prison riot, and that his gang would prevent him from being convicted. Finally, the State presented victim impact testimony in the form of a statement prepared by Ms. Neiman’s parents and read by an extended family member. In their statement, the Neimans characterized the crimes and directly asked the jury to sentence Mr. Lockett to death. They described what Ms. Neiman was like as a child and the future plans and goals she had before she died. They described their experiences when Ms. Neiman did not come home, when they searched for her, and when they learned she had been kidnapped and shot. The federal district court quoted the following excerpt of this statement: The police told me what had happened. Stephanie gave Summer a ride to Bobby Bornt’s house. When Stephanie went in, they tried to get her truck keys. They have a struggle. Stephanie is not going to give up her truck keys, because she’s very proud of her truck.... [S]he works every day. So, of course she’s not going to give up her truck ... The next thing she knows, Clayton [Lockett] hits her over the head with a shotgun. They tell me that they duct-tape Stephanie’s hands and mouth where she cannot scream or yell at them anymore. That[’s] because Stephanie is going to stand up for her rights no matter what.... Why didn’t, at any point, didn’t any of them leave? .... If Shawn [Mathis] was so scared of Clayton, why didn’t they leave them when [Clayton Lockett was in the other truck]? .... Stephanie didn’t know him, didn’t owe him anything. She stood up for what was her right and for what she believed in. And when Clayton asked her if she would tell, she said, yes, she would tell. Right is right and wrong is wrong. Maybe that’s what Clayton was so scared of, because Stephanie did stand up for her rights. She did not back down to him. She did not blink an eye at him. If you ask Stephanie a question, she’s not going to lie to you. She’s going to tell you the truth. Tr. XIII at 2317-19. The statement concluded with this request: [F]or killing our only child, Stephanie, we ask this jury to sentence him to death. Id. at 2324. At least one juror was moved to tears by the Neimans’ statement. b. Mr. Lockett’s Mitigating Evidence In the penalty phase, defense counsel asked the jury to remember that he had been up front with them during the first stage. Tr. XIII 2169. He conceded that Mr. Lockett’s crimes were brutal, but he urged the jury to “spare his life” out of “sympathy” or “empathy.” Id. at 2185. Mr. Lockett’s mitigation evidence focused on his childhood trauma. He presented testimony from three family members (his stepmother, aunt, and uncle) and two expert witnesses. Family members testified that Mr. Lockett’s mother abandoned him when he was three years old and that he was devastated by this abandonment. They testified that after this abandonment, the young Mr. Lockett became extremely attached to his father and idolized him. But Mr. Lockett’s father was abusive and a poor role model. His father severely abused him physically, forced him to use drugs beginning at age three, encouraged sexual activity, and watched pornographic movies in front of him when he was very young. These family members also testified that Mr. Lock-ett’s father was a criminal who taught him to steal and punished him if he was caught. Finally, family members testified that Mr. Lockett was likely sexually abused by his older brother and that he sucked his thumb and wet the bed until he was 12. The first expert witness was social worker Joyce Turner. Ms. Turner was prepared to testify about specific traumatic events and circumstances in Mr. Lockett’s childhood. She intended to share specific facts she had learned about Mr. Lockett’s childhood and to offer her opinion that this trauma contributed directly to his adult criminal behaviors. The State filed a motion in limine to prevent Ms. Turner from testifying, arguing that she was unqualified. The trial court granted the motion in part. It concluded that Ms. Turner was qualified to testify in general terms about how certain types of experiences may affect children, but it limited her testimony to these generic theories. The court reasoned that because her training did not qualify her to diagnose psychological illnesses, she was unqualified to testify about Mr. Lockett as an individual. Ms. Turner was therefore prevented from discussing facts specific to Mr. Lockett or his life and was unable to offer her opinion about how Mr. Lockett’s childhood experiences affected him. Ms. Turner testified in generalities, telling the jury that certain types of childhood trauma were harmful to emotional development, especially physical and sexual abuse and/or abandonment that occurs within the first three years of a child’s life. She testified that these experiences can cause children not to trust others as they grow up, citing bedwetting and thumb-sucking as common symptoms of emotional damage. Ms. Turner explained that anger from these experiences can build up to dangerous levels and can cause individuals to become aggressive as adults. As a result of the trial court’s decision to limit Ms. Turner’s testimony, the jury did not hear certain facts about Mr. Lockett’s childhood that were not introduced through other sources. For example, jurors did not hear that Mr. Lockett’s father threatened him with a gun when he was a child or that this father taught him “that women are ‘no good’ and exist only to ‘do what you wish.’ ” Aplt. Br. at 35; Tr. XIV at 2513. They also did not hear that Mr. Lockett’s mother used drugs while pregnant with him or that he experienced a bad fall and concussion as a child. Furthermore, the jury was not able to hear Ms. Turner’s opinion that there “was a direct connection between [Mr.] Lockett’s abusive background and his crimes.” Aplt. Br. at 38. Mr. Lockett’s second expert witness was Dr. John Smith, who performed a neurological and psychiatric exam on Mr. Lock-ett at the jail. He testified that Mr. Lock-ett suffered from post-traumatic stress disorder and was extremely psychologically damaged as a result of his childhood, especially his mother’s abandonment. Dr. Smith described additional trauma Mr. Lockett experienced as a child and adolescent, including being raped by several men at age 16 while he was incarcerated at an adult correctional facility. Dr. Smith told the jury that these traumatic events had affected Mr. Lockett’s brain development. He further testified that Mr. Lockett’s upbringing and experi-enees had taught him anti-social attitudes and behaviors, such as “toughness,” “gangness,” and “meanness.” Tr. XV at 2665. He insisted, however, that Mr. Lockett was not a psychopath and that Mr. Lockett had feelings of remorse and empathy, especially toward young children. c. The State’s Rebuttal Witness In response to Dr. Smith’s testimony, the State presented rebuttal testimony from Dr. John Call. Before trial, Mr. Lockett briefly explored the possibility of asserting an insanity defense. At the time, both parties agreed that if Mr. Lockett pursued this defense, the State would bear the ultimate burden of proving that Mr. Lockett was sane at the time of the crimes. Mr. Lock-ett and his trial counsel therefore agreed that the State was entitled to have its own expert evaluate Mr. Lockett for this purpose. Dr. Call interviewed Mr. Lockett for one-and-a half to two hours. Because Mr. Lockett ultimately’ chose not to present an insanity defense, neither party introduced evidence related to his mental, health during the guilt phase of trial. During the penalty phase, however, the State called Dr. Call to offer an opinion regarding Mr. Lockett’s future dangerousness and to rebut Dr. Smith’s psychiatric testimony. In response to, a defense objection that Dr. Call’s testimony violated doctor-patient privilege, the State argued that Dr. Call’s opinion was based upon multiple sources, including interviews with other witnesses, reports, and Mr. Lockett’s videotaped confession. Even so, the prosecutor acknowledged that he “would have to assume” that information Dr. Call had gathered in the interview was “interwoven” throughout his opinion and testimony. Tr. XV at 2727. The trial court allowed the testimony. Dr. Call told the jury that he had interviewed Mr. Lockett and tried to administer a personality test but that Mr. Lockett had refused to cooperate. But even without the personality test, Dr. Call testified, he was able to conclude that Mr. Lockett did not suffer from any mental illness. Dr. Call asserted that Mr. Lockett displayed no symptoms of post-traumatic stress disorder. Dr. Call testified, however, that Mr. Lockett had anti-social personality disorder and was a psychopath. d. The Jury’s Sentencing Decision The jury found that all five aggravating circumstances were present and sentenced Mr. Lockett to death for first degree murder. For the non-capital crimes, the jury assessed a total punishment of 2,250 years and 90 days of imprisonment. 3. Mr. Lockett’s Direct Appeal Mr. Lockett appealed to the OCCA, alleging 15 reversible errors, including the six issues we review on appeal. The OCCA found error on several issues but concluded that reversal was unwarranted. The OCCA agreed with Mr. Lockett that the trial court erred in limiting Ms. Turner’s mitigation testimony, but it found the error harmless beyond a reasonable doubt. See Chapman v. California, 386 U.S. 18, 87 S.Ct. 824, 17 L.Ed.2d 705 (1967). The OCCA also held that portions of the victim impact testimony, specifically, the description of Ms. Neiman as a child and discussion of her future goals, violated Oklahoma law. However, the OCCA concluded that this “improper” admission did not violate the Eighth Amendment or the Due Process Clause, stating “[tjhere was no constitutional violation here.” Lockett, 53 P.3d at 427. The OCCA affirmed Mr. Lockett’s conviction and sentence. Mr. Lockett petitioned the United States Supreme Court for a Writ of Certiorari, which was denied on April 21, 2003. Lockett v. Oklahoma, 538 U.S. 982, 123 S.Ct. 1794, 155 L.Ed.2d 673 (2003). Mr. Lockett then sought post-conviction relief from the OCCA, which was denied. Lockett v. State, No. PCD-2002-631 (Okla.Crim.App. Oct. 22, 2002) (unpublished). 4. Mr. Lockett’s § 2254 Petition in Federal District Court Mr. Lockett filed a petition for a writ of habeas corpus pursuant to 28 U.S.C. § 2254 in the United States District Court for the Western District of Oklahoma. He asserted 15 grounds for habeas relief: (1) his exclusion from portions of voir dire; (2) ineffective assistance of trial counsel (three separate claims); (3) suppression of Ms. Turner’s mitigating testimony; (4) insufficient evidence on the aiding and abetting counts; (5) admission of gravesite and exhumation photographs; (6) inclusion of unconstitutional victim impact testimony; (7) inclusion of Dr. Call’s testimony based on Mr. Lockett’s uncoun-seled statements; (8) jury instructions regarding weighing of aggravating and mitigating circumstances; (9) constitutionality of the heinous, atrocious, or cruel aggravator; (10) constitutionality of the continuing threat aggravator; (11) inclusion of unreliable evidence of unadjudicated prior bad acts; (12) insufficient evidence to support the great risk aggravator; (13) inappropriateness of the death penalty due to his mental illness; (14) prosecutorial misconduct during the penalty stage; and (15) cumulative error. The federal district court concluded that the trial court made two constitutional errors. First, the court agreed with the OCCA that the trial court erred in suppressing portions of Ms. Turner’s testimony. Second, the court held that the trial court erred in admitting unconstitutional victim impact testimony. Nevertheless, the district court concluded the errors were individually and cumulatively harmless. It therefore denied habeas relief on all 15 grounds. Lockett v. Workman, No. CIV-03-734-F (W.D.Okla. Jan. 19, 2011). On the same day, the district court granted a COA to Mr. Lockett on seven of the 15 issues: Ground Two (ineffective assistance of trial counsel, as to the guilt-phase only); Three (testimony of Joyce Turner); Four (insufficient evidence of aiding and abetting); Six (victim impact testimony); Seven (testimony of Dr. Call); Twelve (insufficient evidence of the great risk aggravator); and Fifteen (cumulative error). See Lockett v. Workman, No. CIV-03-734-F (W.D.Okla. Jan. 19, 2011) (order granting COA). Mr. Lockett has filed a motion with this court to modify the COA to include three additional issues: Grounds One (right to be present at voir dire); Two (ineffective assistance of trial counsel, as to penalty phase); and Eight (jury instructions at the penalty phase). See Lockett v. Workman, No. 11-6040 (10th Cir. Mar. 11, 2011) (appellant’s motion to expand COA). II. JURISDICTION AND STANDARD OF REVIEW A COA is a prerequisite to appellate jurisdiction in a habeas action. See 28 U.S.C. § 2253(c)(1)(A); Miller-El v. Cockrell, 537 U.S. 322, 335-36, 123 S.Ct. 1029, 154 L.Ed.2d 931 (2003). We therefore have jurisdiction to review the seven issues on which the district court granted COA pursuant to 28 U.S.C. §§ 1291 and 2253. It appears, however, that Mr. Lockett has abandoned one of these issues — sufficiency of the evidence of aiding and abetting sexual assault. We therefore consider that issue waived and do not address it. “[W]e routinely have declined to consider arguments that are not raised, or are inadequately presented, in an appellant’s opening brief.” Bronson v. Swensen, 500 F.3d 1099, 1104 (10th Cir.2007). Mr. Lockett has filed a Motion to Modify Certificate of Appealability, in which he asks us to grant a COA on three additional issues. We consider this motion later in this opinion. The OCCA considered on direct appeal the merits of each of the six claims we review here. Our review is therefore governed by the Antiterrorism and Effective Death Penalty Act of 1996 (“AEDPA”), which requires federal courts to give significant deference to state court decisions. See Hooks v. Workman, 689 F.3d 1148, 1162-63 (10th Cir.2012) (“This highly deferential standard for evaluating state-court rulings demands that state-court decisions be given the benefit of the doubt.” (quotations omitted)). Under AEDPA deference, a federal court’s habeas review is limited to determining whether the OCCA’s conclusion is “contrary to, or involved an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States” or whether the conclusion “was based on an unreasonable determination of the facts in light of the evidence presented in the State court proceeding.” 28 U.S.C. § 2254(d); see Harrington v. Richter, — U.S. --, 131 S.Ct. 770, 785, 178 L.Ed.2d 624 (2011). “Clearly established law is determined by the United States Supreme Court, and refers to the Court’s ‘holdings, as opposed to the dicta.’ ” House v. Hatch, 527 F.3d 1010, 1015 (10th Cir.2008) (quoting Lockyer v. Andrade, 538 U.S. 63, 71, 123 S.Ct. 1166, 155 L.Ed.2d 144 (2003)). An OCCA decision is “contrary to” a clearly established law if it “applies a rule different from the governing law set forth in [Supreme Court] cases, or if it decides a case differently than [the Supreme Court has] done on a set of materially indistinguishable facts.” Bell v. Cone, 535 U.S. 685, 694, 122 S.Ct. 1843, 152 L.Ed.2d 914 (2002). An OCCA decision is an “unreasonable application” of clearly established federal law if it “identifies the correct governing legal principle ... but unreasonably applies that principle to the facts of petitioner’s case.” Wiggins v. Smith, 539 U.S. 510, 520, 123 S.Ct. 2527, 156 L.Ed.2d 471 (2003) (quotations omitted). Notably, an application of Supreme Court law may be incorrect without being unreasonable. Williams v. Taylor, 529 U.S. 362, 410, 120 S.Ct. 1495, 146 L.Ed.2d 389 (2000). We may reverse only if all “fairminded jurists” would agree that the state court got it wrong. Richter, 131 S.Ct. at 786. “[E]ven a strong case for relief does not mean the state court’s contrary conclusion was unreasonable.” Id. at 786. Our review “is limited to the record that was before the” OCCA. Cullen v. Pinholster, — U.S.-, 131 S.Ct. 1388, 1398, 179 L.Ed.2d 557 (2011). Finally, “we review the federal district court’s conclusions of law de novo and its findings of fact, if any, for clear error.” Hain v. Gibson, 287 F.3d 1224, 1229 (10th Cir.2002). III. DISCUSSION We first analyze the six' issues on which the federal district court granted a COA and which Mr. Lockett addresses in his briefs. We address these issues in the order in which the parties briefed them, beginning with five challenges related to the sentencing phase of trial: (A) restriction of Ms. Turner’s mitigation testimony; (B) admission of victim impact testimony; (C) admission of rebuttal testimony by Dr. Call; (D) sufficiency of the evidence supporting the great risk aggravating circumstance; and (E) cumulative error. We then turn to the sole guilt-phase issue briefed on appeal, (F) trial counsel’s alleged ineffective assistance by conceding guilt. Finally, we address Mr. Lockett’s motion to expand the COA to include three additional issues: (A) the trial court’s decision to conduct voir dire interviews with 19 jurors outside Mr. Lockett’s presence; (B) trial counsel’s alleged ineffective assistance in the penalty phase for failing to marshal specific evidence of mental illness; and (C) the constitutionality of the jury instruction regarding the weighing of aggravating and mitigating circumstances. A. The Erroneous Limitation of Ms. Turner’s Mitigation Testimony Mr. Lockett asserts that the trial court erred in limiting Ms. Turner’s mitigation testimony to generic statements. The OCCA agreed but found the error to be harmless. The federal district court upheld the OCCA’s decision under AEDPA deference, and we affirm. 1. Legal Background The Eighth and Fourteenth Amendments protect a defendant’s right to present mitigating evidence in a capital case. Lockett v. Ohio, 438 U.S. 586, 604, 98 S.Ct. 2954, 57 L.Ed.2d 973 (1978). A jury may not be prevented from considering “any aspect of a defendant’s character or record and any of the circumstances of the offense that the defendant proffers as a basis for a sentence less than death.” Id. at 604, 98 S.Ct. 2954. Moreover, Oklahoma law allows social workers to render expert opinions like the excluded portion of Ms. Turner’s proposed testimony. E.g., Salazar v. State, 919 P.2d 1120 (Okla.Crim.App.1999). Because the State concedes that the limitation on Ms. Turner’s testimony was constitutional error, we consider only whether it was harmless. In a direct review of a state court criminal judgment, a constitutional error is harmless only if a court finds that it was “harmless beyond a reasonable doubt.” Chapman, 386 U.S. at 24, 87 S.Ct. 824. But in a collateral review of a state court’s criminal judgment, we apply the “more forgiving standard” first articulated in Brecht v. Abrahamson, 507 U.S. 619, 113 S.Ct. 1710, 123 L.Ed.2d 353 (1993). Fry v. Pliler, 551 U.S. 112, 116, 127 S.Ct. 2321, 168 L.Ed.2d 16 (2007). Under the Brecht standard, an error is deemed “harmless unless it ‘had a substantial and injurious effect or influence in determining the jury’s verdict.’ ” Fry, 551 U.S. at 116, 127 S.Ct. 2321 (quoting Brecht, 507 U.S. at 631, 113 S.Ct. 1710). A substantial and injurious effect exists if a “court finds itself in grave doubt about the effect of the error on the jury’s [sentencing decision].” Bland v. Sirmons, 459 F.3d 999, 1009 (10th Cir.2006). Brecht explains that “an error that may justify reversal on direct appeal will not necessarily support a collateral attack on a final judgment.” 507 U.S. at 634, 113 S.Ct. 1710 (quotations omitted). “However, when a court is “in virtual equipoise as to the harmlessness of the error” ... the court should treat the error ... as if it affected the verdict ...” Selsor v. Workman, 644 F.3d 984, 1027 (10th Cir.2011) (quotations omitted). Because a death sentence requires a unanimous jury, “the ultimate inquiry is: ‘Do we harbor a significant doubt that this evidence would have caused at least one juror to choose life rather than death?’ ” Moore v. Reynolds, 153 F.3d 1086, 1110 (10th Cir.1998) (quoting Castro v. Oklahoma, 71 F.3d 1502, 1516 (10th Cir.1995)). 2. The Error Did Not Have a Substantial and Injurious Effect on the Jury’s Decision Our careful review of the record leads us to conclude that the erroneous limitation on Ms. Turner’s testimony did not have a “substantial and injurious effect” on the jury verdict. Fry, 551 U.S. at 116, 127 S.Ct. 2321. We discern in Mr. Lockett’s arguments three possible ways in which the excluded portions of Ms. Turner’s testimony could have influenced the jury’s decision. First, did missing factual details prevent the jury from genuinely understanding the context of Mr. Lockett’s childhood experiences? Second, did the absence of Ms. Turner’s explicit opinion testimony that Mr. Lock-ett’s adult criminal behavior was connected to his childhood trauma prevent the jury from understanding that this connection may have existed? Third, could the jury have inferred from Ms. Turner’s failure to draw this explicit connection that she did not believe such a connection existed? a. Missing Facts We do not harbor significant doubt as to whether the handful of missing facts had a substantial and injurious effect on the jury’s decision. Jurors heard substantial evidence that would have allowed them to understand the context of Mr. Lockett’s childhood. The few missing details were not significantly different from the numerous details introduced through the testimony of Mr. Lockett’s family members. For example, jurors did not hear that Mr. Lockett’s father pointed guns at his family, but they did hear that his father routinely and severely beat his family members, that he was a criminal who taught young Mr. Lockett to commit crimes and punished him for getting caught, and that he showed Mr. Lockett pornography and forced him to do drugs when he was a young child. Although the missing facts were relevant to mitigation, they were not significantly different in kind from the many facts the jury heard. They represent cumulative evidence of severe child abuse and poor parenting. We therefore harbor no significant doubt about the effect of these missing facts on the jury’s sentencing decision. b. Missing Opinion We also do not harbor significant doubts as to whether the omission of Ms. Turner’s expert opinion about Mr. Lockett had a substantial and injurious influence on the jury’s decision. Taken together, the mitigating evidence, including Dr. Smith’s testimony, was sufficient to allow the jury to understand how and why childhood trauma may influence adult behavior. Although she was not able to explicitly state her opinion that Mr. Lockett’s adult crimes were tied to childhood trauma, her general testimony pointed to these conclusions. For example, Ms. Turner testified that abuse and abandonment, especially in the first three years of life, erode children’s sense of trust and safety and cause “a buildup of repressed rage” that may eventually release in the form of aggressive behavior. Aplt. Br. at 20. The jury likely understood that these points related to the testimony from Mr. Lockett’s family members about the abuse and abandonment he experienced in childhood, including the first three years of life. Dr. Smith reinforced this connection, testifying that Mr. Lockett was mentally ill as a result of his childhood trauma, which influenced his criminal acts. Dr. Smith testified at length to specific connections between Mr. Lockett’s childhood and adolescent trauma, on the one hand, and his brain development and adult criminal behavior, on the other. He told the jury that as a 3-year-old child, Mr. Lockett was abandoned by his mother and “found on [his father’s] doorstep, urine-soaked,” and that Mr. Lockett’s father frequently stripped him naked and beat him with belts or boards. Tr. Vol. XV at 2637. Dr. Smith told the jury that this type of early childhood trauma “may affect the neuron connections in the brain,” which in turn control how he “integrates, perceives, and expresses [himself] throughout life.” Tr. Vol. XV at 2633. According to Dr. Smith, this trauma caused him to develop “an extremely deep mistrust of human relationships.” Id. at 2642. This led Mr. Lockett to join a gang, which gave him a sense of belonging but also taught him criminal behaviors and “deviant” values. Id. at 2643. Dr. Smith said that beneath his “cloak of gangland meanness,” Mr. Lockett was “very insecure, full of anxiety” and often felt “very vulnerable.” Id. at 2649. Dr. Smith testified that Mr. Lockett had been raped in prison by a group of three men when he was 16 years old and that this experience, along with possible early childhood sexual assault, may have led him to “repress[] or dissociate[ ]” his sexual assault of Ms. Hair. Id. at 2647. Dr. Smith also offered an explanation for why Mr. Lockett allowed two of his victims to live while killing Ms. Neiman: Mr. Lockett may have become enraged at Ms. Nei-man’s defiance because “his very earliest rage and hurt was from women.” Id. at 2663. Dr. Smith suggested that Mr. Lock-ett did not kill Mr. Bornt and Ms. Hair because “he was touched ... by their quickness and willingness to agree” not to report him and because they had young children and Mr. Lockett knew “what it’s like to go without mothering ... [or] decent parenting.” Id. at 2664. In short, Dr. Smith offered a clear and emphatic opinion that Mr. Lockett’s crimes were linked to his childhood and adolescent trauma. We therefore do not harbor significant doubt as to whether the absence of Ms. Turner’s opinion on the issue affected the jury’s sentencing decision. c. Potential Negative Inference Mr. Lockett’s strongest argument relates to the third question: whether the jury may have drawn a negative inference from Ms. Turner’s missing analysis. Mr. Lockett argues that upon hearing Ms. Turner’s extensive testimony about hypothetical effects of childhood trauma on individuals, the jury likely expected her to conclude that, in her expert opinion, Mr. Lockett’s childhood trauma was connected to his adult behavior. When this opinion did not come, Mr. Lockett argues, the jury may have drawn the false conclusion that Ms. Turner did not believe there was such a connection. But this potential negative inference does not overcome our highly deferential standard of review. Although it may have been possible for jurors to conclude that Ms. Turner believed Mr. Lockett’s actions were not linked to childhood trauma, another inference was just as likely: that Ms. Turner did not testify to specifics because she was not familiar with Mr. Lockett’s individual situation and that it was the role of the other expert witness, Dr. Smith, to provide these specifics. It is also possible that jurors did not draw any particular inference about what was not included in her testimony. Moreover, even if jurors did draw a negative inference, it is not likely to have substantially influenced their verdict in the context of all aggravating and mitigating evidence. Mr. Lockett presented four witnesses in mitigation. As the State argues, “the jury was well aware of the trials and tribulations [he] faced growing up.” Aplee. Br. at 13. His mitigating evidence was countered by extensive aggravating evidence, including the testimony of Dr. Call and evidence of Mr. Lockett’s jailhouse misbehavior (e.g., making weapons and making threats about his surviving victims). Furthermore, certain evidence presented during the guilt phase no doubt influenced the jury’s sentencing decision. The jury viewed a videotape of Mr. Lock-ett’s matter-of-fact confession and saw and heard detailed testimony from two surviving witnesses. In the end, the jury found the presence of five aggravating factors beyond a reasonable doubt. Viewed in this context, we do not find ourselves “in grave doubt” about the effect of the suppressed portions of Ms. Turner’s testimony on the jury’s sentencing decision. Bland, 459 F.3d at 1009 (quotations omitted). We therefore affirm the district court’s refusal to grant Mr. Lockett relief on this ground. B. The Admission of Unconstitutional Victim Impact Testimony Mr. Lockett asserts that the trial court erred in admitting victim impact testimony that included sentencing recommendations and descriptions of the crime. Relying on its own precedent, the OCCA disagreed and found no constitutional error. The federal district court found that the victim impact testimony violated Mr. Lockett’s Eighth Amendment rights under clearly established Supreme Court law. It concluded, however, the admission was harmless under Brecht and Tenth Circuit precedent. We affirm. 1. Legal Background In Booth v. Maryland, 482 U.S. 496, 107 S.Ct. 2529, 96 L.Ed.2d 440 (1987), the Supreme Court held that introduction of a victim impact statement to a jury at the sentencing phase of a capital murder trial violated the Eighth Amendment. Id. at 509, 107 S.Ct. 2529. In that case, the victim impact statement included two types of evidence. The first type involved statements about the victim’s “personal characteristics” and the emotional impact of the crime on the victim’s family. Id. at 503, 107 S.Ct. 2529. The second type of evidence involved the victim’s family’s opinions about the crime, the defendant, and the appropriate sentence. Id. at 508, 107 S.Ct. 2529; Payne v. Tennessee, 501 U.S. 808, 830, 111 S.Ct. 2597, 115 L.Ed.2d 720 (1991). Booth held that both types of evidence are “irrelevant to a capital sentencing decision” and “create[ ] a constitutionally unacceptable risk that the jury may impose the death penalty in an arbitrary and capricious manner.” 482 U.S. at 502-03, 107 S.Ct. 2529. The Court revised its ruling four years later in Payne v. Tennessee, to allow victim testimony that includes the first type of evidence, description of the victim and the effects on the victim’s family. 501 U.S. at 827, 111 S.Ct. 2597. The Payne Court held that there is no per se bar against such victim impact testimony under the Eighth Amendment. Id. The Payne Court specifically noted, however, that its holding did not affect Booth’s rule that “admission of a victim’s family members’ characterizations and opinions about the crime, the defendant, and the appropriate sentence violates the Eighth Amendment.” Id. at 830 n. 2, 111 S.Ct. 2597. The Supreme Court has explained that sentencing decisions are properly based upon “the defendant’s personal responsibility and moral guilt.” Booth, 482 U.S. at 502, 107 S.Ct. 2529 (quotations omitted). The danger that an improper victim impact statement poses to a defendant’s Eighth Amendment rights is “that the jury may impose the death penalty in an arbitrary and capricious manner,” by focusing on irrelevant factors such as “the degree to which the victim’s family is willing and able to express its grief’ or the perceived quality of the victim’s character. Id. at 505-06,107 S.Ct. 2529. The Tenth Circuit has clearly held on numerous occasions that Booth continues to prohibit victim impact statements that describe characteristics of the crime or request the death sentence. E.g., Hain, 287 F.3d at 1238-39. In spite of this, Oklahoma law expressly authorizes the admission of victim impact testimony, including victims’ characterization of the crime and opinions as to what sentence a defendant should receive, Okla. Stat. tit. 21, § 142A-1, and the OCCA has repeatedly allowed the practice, see, e.g., Ledbetter v. State, 933 P.2d 880, 890-91 (Okla.Crim.App.1997). This court has found error in numerous OCCA opinions allowing prohibited victim impact statements in capital cases. E.g. Selsor v. Workman, 644 F.3d 984, 1026-27 (10th Cir.2011); Hooper v. Mullin, 314 F.3d 1162, 1174 (10th Cir.2002); Hain, 287 F.3d at 1239. The OCCA has acknowledged this Tenth Circuit case law but refuses to follow it. See Coddington v. State, 254 P.3d 684 (Okla.Crim.App.2011). 2. The Victim Impact Statement Violated Clearly Established Law But Did Not Have a Substantial and Injurious Effect on the Jury’s Decision We are convinced that some portions of the victim impact statement were unconstitutional, but our careful review of the record indicates that this unconstitutional evidence did not have a substantial and injurious effect on the jury’s sentencing decision. In the following analysis, we first address Mr. Lockett’s claim that the victim impact evidence violated his Eighth Amendment rights and then turn to whether the violation satisfies Brecht’s harmless error standard. a. Constitutional Violation In determining whether the challenged portions of the statement were unconstitutional, we apply AEDPA deference. We reject the OCCA’s conclusion only if it is “contrary to, or involved an unreasonable application of, clearly established Federal law, as determined by the Supreme Court of the United States.” 28 U.S.C. § 2254(d). The OCCA explicitly relied on an incorrect statement of the law when it stated that “[vjictim impact testimony may include ... circumstances surrounding the crime, the manner in which the crime was perpetrated, and the victim’s opinion of a recommended sentence.” Lockett, 53 P.3d at 427 (quotations omitted). The OCCA also assumed that Payne overruled Booth in its entirety. Id. This is contrary to the Supreme Court’s plain statement that Payne did not affect Booth’s Eighth Amendment prohibition on “victim’s family members’ characterizations and opinions about the crime, the defendant, and the appropriate sentence.” Payne, 501 U.S. at 830 n. 2, 111 S.Ct. 2597; see also DeRosa v. Workman, 679 F.3d 1196, 1237 (10th Cir.2012) (“[I]t remains constitutionally improper for the family members of a victim to provide characterizations and opinions about the crime, the defendant, and the appropriate sentence.” (quotations omitted)); Selsor v. Workman, 644 F.3d 984, 1026-27 (10th Cir.2011) (“The Supreme Court’s decision in Payne and our own post -Payne cases clearly establish that it is a violation- of the Eighth Amendment to allow a victim or a victim’s family member to comment, during second-stage proceedings, on the appropriate sentence for a capital defendant.”): The victim impact statement in this case involved two types of evidence prohibited by the Eighth Amendment: characterization of the crime and the defendant and a sentencing recommendation. The Nei-mans’ statement described portions of the crime, including Mr. Lockett’s beating of Ms. Neiman with the shotgun, his successful attempt to take her truck, and his taping her hands and mouth so “she cannot scream or yell at them anymore.” Tr. Vol. XIII at 2318. The statement speculated about Ms. Neiman’s thoughts and feelings during the crime, telling the jury that her refusal to cooperate with Mr. Lockett was based on her-moral code and attributing motives to Mr. Lockett. Id. at 2318 (“Stephanie is going to stand up for her rights no matter what.... Right is right and wrong is wrong. Maybe that’s what Clayton was so scared of.”). The Neimans’ statement ended with an unambiguous plea to the jury to sentence Mr. Lockett to death. Id. at 2324. In short, the admission of portions of the Neimans’ victim impact statement was unconstitutional in light of clearly established Supreme Court law. b. Harmless Error We now consider “whether the erroneous admission of victim impact testimony so clearly swayed the jury as to cause [Mr. Lockett] actual prejudice.” Welch v. Workman, 639 F.3d 980, 1002 (10th Cir.2011). Our harmless error analysis is governed by Brecht’s “substantial and injurious effect” standard. See Fry, 551 U.S. at 121-22, 127 S.Ct. 2321. Thus, the error is reversible only if we find ourselves “in grave doubt” about whether the victim impact testimony affected the jury’s verdict. See Bland, 459 F.3d 999, 1009 (10th Cir.2006) (quotations omitted). Because the OCCA erred in finding no Eighth Amendment violation, we grant no deference to its harmless error analysis and consider the question de novo. See Welch v. Sirmons, 451 F.3d 675, 703-04 (10th Cir.2006), overruled on other grounds by Wilson v. Workman, 577 F.3d 1284 (10th Cir.2009). To determine whether the Neimans’ statement had a substantial and injurious effect on the jury’s decision, we must consider it in the overall context of the trial and the “record as a whole.” Brecht, 507 U.S. at 638, 113 S.Ct. 1710. We first examine the statement itself and then address the broader’ context of mitigating and aggravating evidence presented at trial. We find guidance for our analysis in Tenth Circuit precedent addressing harmless error with respect to unconstitutional victim impact statements. i. The Victim Impact Statement The federal district court described the challenged portions of the statement as “noticeably more pallid[ ] than might have been expected” and “not nearly as inflammatory as they, under the facts of this case, could have been.” Lockett, No. CIV-03-734-F at 43. The most emotional and expressive part of the Neimans’ statement was constitutionally permissible: statements about the effect the murder had on them as a family, about their daughter’s unique and positive qualities, and about how much they missed her. We agree that the statement was relatively pallid in comparison to other victim impact statements this circuit has found harmless. For example, this case involved a single victim impact statement read to the jury by an extended family member, and not by the Neimans themselves. In contrast, Welch v. Sirmons involved unconstitutional victim impact statements from five separate family members. 451 F.3d at 710. Similarly, DeRosa v. Workman involved multiple unconstitutional victim impact statements. 679 F.3d at 1238. In both cases, we found the inclusion of the unconstitutional evidence to be harmless under Brecht. In the Neimans’ statement, the description of the crime was brief and devoid of colorful or inflammatory language. It did not relay any facts that had not already been clearly established by the evidence. In contrast, Welch v. Workman involved unconstitutional victim impact statements from three family members that described the crimes in vivid and emotional detail. For example, the victim’s father told the jury that the defendant “chased my son down and ... butchered him with a knife.” 639 F.3d at 997. The victim’s mother testified that “there is no doubt that they’re the ones who killed him. They planned it.” Id. at 999. The Neimans’ statement also did not include any characterization of Mr. Lock-ett. The statements that were held to be harmless in Welch v. Workman described the defendant in highly emotional terms. The victim’s mother told the jury the defendant “sits in this courtroom, smug and uncaring” and never “showing] one sign of remorse. No shame.” Id. Multiple statements described the defendant as a “murderous animal” and a “parasite.” Id. at 990, 999. The Neimans’ request for the death penalty was a single, concise sentence. In contrast, the three victim statements that were held to be harmless in Welch v. Workman contained extremely emotional pleas for the death penalty. The family members in that case “implored” and “begged” the jury to sentence the defendant to death. Id. at 990, 1000. The victim’s father told the jury his request was on behalf of his “grandsons, Robert and James, who are not old enough to speak for themselves,” and who would grow up without their father. Id. at 997. The victim’s mother asked the jury to disregard the mitigating evidence, criticized the defense counsel for suggesting the defendant’s childhood circumstances warranted mercy, and stated that her own childhood was also difficult but that this did not give anyone “the right to brutally attack another human being.” Id. at 999. Finally, as in Welch v. Workman, Mr. Lockett’s jury was correctly instructed that its decision about whether to sentence the defendant to death was “limited to a moral inquiry into the culpability of the defendant, not an emotional response to the evidence.” Lockett, No. CIV-03-734F at 43. See Welch v. Workman, 639 F.3d at 1004. ii. Context of All Mitigating and Aggravating Evidence In evaluating whether the unconstitutional portions of the Neimans’ statement had a substantial and injurious effect on the jury, we must consider it in the context of all of the aggravating and mitigating evidence. First, the evidence of aggravating circumstances was substantial. During the guilt phase, the jury heard Mr. Lockett’s confession, in which he described his brutal crimes in unemotional terms and without expressing remorse, as well as emotional testimony from two surviving victims. During the penalty phase, the jury heard from seven State witnesses. Two witnesses described Mr. Lockett’s past criminal and violent behavior. Five correctional officers testified that during his time in jail, Mr. Lockett had been repeatedly found with contraband weapons and had threatened guards. Moreover, the jury heard evidence that Mr. Lockett had threatened the safety of both surviving victims — individuals whom jurors knew from earlier guilt phase testimony — in retaliation for their cooperation with authorities. After hearing all aggravating and mitigating evidence from both sides, the jury found the presence of five aggravating circumstances beyond a reasonable doubt. In Welch v. Workman, we held that overwhelming evidence of guilt, testimony about the brutality of the crime, and the jury’s finding of three aggravating circumstances clearly outweighed any potential impact of unconstitutional victim impact testimony. 689 F.3d at 1004. We emphasized that, as here, the jury was correctly instructed on the role of mitigating evidence in its sentencing decision. Id. We explained: The family members’ testimony violated every category of impermissible expression.... But “[t]he principle that collateral review is different from direct review resounds throughout our habeas jurisprudence.” Brecht, 507 U.S. at 633, 113 S.Ct. 1710. Considering all of the evidence in both stages of this trial.... [w]e cannot conclude that the jury’s ver-diet was substantially influenced by the victim impact testimony. See Brecht, 328 U.S. at 776. Id. at 1003-04. Given our precedent in cases like Welch v. .Workman, which involved more extensive unconstitutional victim impact testimony and fewer aggravating circumstances, we cannot conclude that the erroneously admitted victim impact testimony in this case was prejudicial. Remembering that “an error that may justify reversal on direct appeal will not necessarily support a collateral attack on a final judgment,” Brecht, 507 U.S. at 634, 113 S.Ct. 1710, we affirm the district court’s finding that this error was harmless. C. Admission of Dr. Call’s Rebuttal Evidence Mr. Lockett argues that the trial court erred by allowing Dr. Call to testify because his examination of Mr. Lockett exceeded the scope agreed to by Mr. Lock-ett’s counsel and therefore violated his Sixth Amendment rights. The OCCA found that the record did not support the factual contention that Dr. Call’s interview exceeded the agreed scope. It further found no constitutional error and' held alternatively that any error was harmless. The federal district court echoed these conclusions. We affirm the federal district court’s determination that the trial court’s admission of Dr. Call’s testimony survives AEDPA deference. We do not reach the harmless error question. 1. Legal Background The Sixth Amendment requires that a defendant be afforded the right to effective assistance of counsel in determining whether to submit to an interview or examination with a State expert. See Estelle v. Smith, 451 U.S. 454, 470-71, 101 S.Ct. 1866, 68 L.Ed.2d 359 (1981). The Supreme Court has held that defense counsel must be given advance notice of the scope and substance of the expert examination. See id.; Buchanan v. Kentucky, 483 U.S. 402, 424, 107 S.Ct. 2906, 97 L.Ed.2d 336 (1987). In Estelle, the Supreme Court rejected the prosecution’s use of psychiatric testimony regarding the defendant’s future dangerousness during the penalty phase because the expert drew his opinion from a court-ordered competency examination. 451 U.S. at 456-60, 101 S.Ct. 1866. The Court determined this violated the defendant’s Fifth and Sixth Amendment rights because statements during the examination were made without the benefit of counsel and because the defendant’s counsel did not have advance notice of the scope and substance of the examination. Id. at 467-71, 101 S.Ct. 1866. The Estelle Court emphasized that the psychiatric testimony was based on a court-ordered competency examination that the defendant did not request and that the defendant did not put his mental health at issue. 451 U.S. at 466, 468. Several years after Estelle, the Supreme Court issued its opinion in Buchanan, which clarified that the prosecution retains the right to rebut psychological evidence presented by the defendant. 483 U.S. at 422-23, 107 S.Ct. 2906. In Buchanan, the defense counsel joined a prosecution motion requesting a psychiatric examination by a state expert pursuant to a state law governing involuntary hospitalization. Id. at 410-11, 107 S.Ct. 2906. The state psychiatric expert conducted the interview and prepared a psychological evaluation. Id. at 408-10, 107 S.Ct. 2906. At trial, the defendant presented an affirmative defense of extreme emotional disturbance and called his own mental health expert to support the defense. Id. at 408, 107 S.Ct. 2906. The prosecutor responded with rebuttal evidence from the state psychiatric expert’s report. Id. at 410, 107 S.Ct. 2906. The Buchanan Court held that admitting this evidence was constitutional. Id. at 422, 107 S.Ct. 2906. It distinguished Estelle, explaining that Estelle involved “distinct circumstances” — in particular, that the defendant had not requested the examination or put his mental health at issue. Id. The Court explained that, “if a defendant requests such an evaluation or presents psychiatric evidence, then, at the very leas