*343 Opinion
On October 9, 1991, defendant Gregory Scott Smith pled guilty to (1) first degree murder in violation of Penal Code section 187, subdivision (a); 1 (2) kidnapping in violation of section 207, subdivision (a); (3) arson in violation of section 451, subdivisions (c) and (d); (4) commission of a forcible lewd act upon a child in violation of section 288, subdivision (b); and (5) forcible sodomy in violation of section 286, subdivision (c). Defendant admitted the charged special circumstances that the murder was committed during the commission of a kidnapping, a lewd act upon a child, and an act of sodomy. (See § 190.2, subd. (a)(17).) After the penalty trial, the jury returned a verdict of death. The trial court denied defendant’s motions for a new trial and for modification of the verdict, and it sentenced defendant to death. The court imposed concurrent sentences of 11 years on count 2, four years on count 3, six years on count 4, and six years on count-5, but it stayed execution of noncapital sentences pending execution of the death sentence.
This appeal is automatic. (§ 1239, subd. (b).)
I. The Prosecution Evidence
A. Defendant’s Prior Relationship with the Victim
From April of 1989 to March 6, 1990, defendant, then 21 to 22 years old, worked for the 31st District Latchkey Project, serving as a teacher’s aide at Darby and Chatsworth elementary schools in the San Fernando Valley in Southern California. His behavior as a teacher’s aide was inappropriate; he would play with the children as if he were a child, but would get too rough. Defendant was particularly mean to eight-year-old Paul Bailly, a student at Darby Elementary School. On two occasions he tied Paul up with jump ropes. Once Paul asked the school’s daycare director to fire defendant. Defendant overheard the request, and said he was going to “get [Paul] back.”
On March 6, 1990, Hal Kuhn, executive director of the Latchkey Project, fired defendant because defendant lacked maturity and played too roughly with the children. Defendant was upset and often talked about “getting even.”
B. The Investigation of the Murder of Paul Bailly
About 6:30 a.m. on March 23, 1990, Mary Bailly, Paul’s mother, dropped him off at Darby Elementary School. At 11:50 a.m., Captain Fred Baugher of the Ventura County Fire Department responded to a fire in the Black Canyon *344 area near Simi Valley and discovered Paul’s body in the fire. Paul had been gagged with a cloth gag and duct tape. A set of handcuffs was found at the scene. According to supervising investigator James Allen, the bum pattern on the ground and the condition of the body showed that someone had poured fire accelerant on the corpse and set it on fire. Dr. Frederick Lovell, the Chief Medical Examiner for Ventura County, attributed the cause of death to asphyxiation due to strangling and to aspiration of vomit. In his opinion, the victim had also been forcibly sodomized. The victim was dead before his body was set afire.
On March 24 and 25, 1990, Ventura County sheriff’s deputies searched defendant’s residence. They found, among other items, a pair of keys that fit the handcuffs found near Paul’s body, several rolls of duct tape, and several newspapers. The newspapers, which were about two months old, featured an article about a well-publicized child molestation case in which the defendants were acquitted and another case where the victim had been set on fire by his father.
C. Other Violent Acts by Defendant
1. During 1988-1989, shortly before the March 1990 murder of Paul Bailly, Daniel Kavalsky worked with defendant at the Fallbrook Theater in the San Femando Valley. He and defendant disliked each other. On one occasion defendant came up to Kavalsky and started choking him. Another person pulled defendant off Kavalsky.
2. In 1984, when Brian Due was about five or six years old, defendant, who was then 16 or 17 years old, approached Brian with one hand in a glove. Defendant said the glove had a mind of its own and defendant could not control it. Defendant then choked Brian with the glove, but released him when he cried.
3. During the summers of 1988 and 1989, Darren Goodman and defendant were counselors at the Griffith Park Boys Camp. Once, when Goodman was a referee at a hockey game, he penalized defendant for holding his hockey stick too high, an act that endangers other players. Defendant responded by striking Goodman in the shins with the hockey stick.
4. Brian Francis was 12 years old when he attended the Griffith Park Boys Camp during the summer of 1988. On one occasion a basketball accidentally hit defendant. When Brian laughed, defendant became angry and threw the ball at Brian as hard as he could. Defendant then chased Brian and tried to pull him into a cabin. When Brian resisted, defendant pulled Brian into the camp office. One of the camp directors observed the incident and fired defendant.
*345 D. Expert Testimony of Dr. Chris Hatcher
Dr. Chris Hatcher, a clinical psychologist, was an expert witness for the prosecution. He described the characteristics of persons who commit crimes such as the sodomy and murder of Paul Bailly.
Dr. Hatcher testified that persons who commit abductions similar to the abduction in this case are carrying out a fantasy in which children are abducted, bound, and sexually assaulted. Characteristic components of the fantasy include forcible sodomy, strangulation, and disfigurement of the victim’s body. Dr. Hatcher did not examine defendant or give an opinion on defendant’s mental state. (We describe Dr. Hatcher’s testimony further when we discuss issues regarding its admissibility and use. See post, at p. 351 et seq.)
II. The Defense Evidence
A. Defendant’s Background
Defendant’s mother described defendant as developmentally delayed and hyperactive from a very early age. He was six years old before he could put words together in coherent speech. Defendant’s mother was affectionate but overprotective toward him. Defendant’s father was ashamed of defendant’s retardation and verbally abused defendant; the father physically abused defendant’s mother.
Janice Foster, an education therapist hired by defendant’s parents to help him with learning disabilities, said that at age 16 defendant had the attitude of an eager, friendly eight year old, and intellectually he was like an eight year old. Defendant’s mother and his sisters also described defendant’s mental retardation.
Defendant had few friends. His closest relationship was with his dog Blue, who was given to him when defendant was four months old. Blue died when defendant was 16 or 17 years old, shortly after defendant and his mother moved from the family home and left Blue behind. Defendant’s mother said defendant never recovered from Blue’s death, for which he felt responsible.
B. Psychological Expert Testimony
Dr. David Benson, a professor of neurology, tested defendant’s IQ at 85-86. He observed signs of brain abnormalities. He diagnosed defendant as mildly to moderately mentally retarded.
*346 After administering a PET scan (positron emission tomography scan) to defendant, Dr. Monte Buchsbaum, a psychiatrist, testified that defendant suffers from brain damage in areas of the brain controlling memory and learning.
In the opinion of Dr. Francis Crinella, a clinical psychologist specializing in developmental neurology, psychological test results confirmed brain damage and were consistent with defendant’s life history of “immaturity, explosiveness, conduct disorders, and difficulties in getting along.” Defendant’s IQ test scores ranged from 51 to 85. Generally, defendant did better on tests that required little abstract reasoning. In Dr. Crinella’s view, defendant’s brain damage affected his ethical and moral judgment.
Dr. Jerome Evans, a clinical psychologist, said defendant was mentally disabled in various ways throughout his life, and as he got older the disability became worse. Defendant’s performance never passed that of an eight to 10 year old. According to Dr. Evans, defendant is incapable of acting remorseful, because he “doesn’t know when to try to look good” for others. Persons with defendant’s “family background and . . . emotional problems . . . never succeed at anything. . . . [E]verything that they try turns out to be a mess or a problem.” On cross-examination by the prosecution, Dr. Evans said he had diagnosed defendant as manifesting a schizotypal personality disorder; such persons have peculiar ideas, odd beliefs, magical thinking, and paranoid thoughts.
Dr. John Irwin, a professor of sociology, testified about the conditions of confinement in maximum security prisons.
II. Issues Relating to Jury Selection
A. Juror Removal by Peremptory Challenge
During voir dire, the prosecutor exercised peremptory challenges to excuse Prospective Jurors Donna T. and Donna V. Defendant objected, claiming that the prosecutor was systematically excluding Black jurors, in violation of
People v. Wheeler
(1978)
Before hearing from the prosecutor on defendant’s Wheeler motion, the trial court stated that it was not implicitly finding that the peremptory challenges were for an impermissible purpose. The prosecutor pointed to Donna T.’s responses to his questions during the general voir dire;
Q: “Mrs. [T.], ... do you as you sit there right now feel sorry for the defendant?”
A; “Yes, I do.”
Q: “Okay, a lot? A little? Some?”
A: “A lot.”
Q: “Okay. And is that because of the situation he’s in, or . . . .”
A: “Yes.”
The prosecutor noted that Juror Donna T. hesitated when asked if she could vote for the death penalty, 4 and that in answering a question in the jury questionnaire about support for the death penalty, she rated herself as a “five” on a scale of one to ten.
With respect to Prospective Juror Donna V., the prosecutor said he challenged her because of her opposition to the death penalty. During the death-qualifying voir dire she said there should not be a death penalty; she, like Juror Donna T, rated herself at “five” on the death penalty rating scale. The prosecutor said that the mean average for seated jurors was 7.25, although two of the seated jurors had a five rating.
In reply, defense counsel noted that the prosecutor’s questioning of Juror Donna T. was short. Regarding Juror Donna V., he said that her problem with *348 the death penalty was her concern that an innocent man might be executed, a circumstance that could not happen here because defendant had already pleaded guilty.
After hearing from both sides, the trial court reiterated its finding that defendant had not made a prima facie showing because the prosecution’s peremptory challenges to Prospective Jurors Donna T. and Donna V. were objectively reasonable and unrelated to the jurors’ race. It therefore denied defendant’s Wheeler motion. We agree with the trial court’s conclusion.
B. The Removal of Juror Robert B. After the Jury Was Sworn
After the jury was sworn, but before counsel’s opening statements, Juror Robert B. informed the court that he needed to fly to Seattle to deal with a family emergency. His mother was 82 years old, had “shortness of breath,” and he had just learned a nurse had been brought in to care for her. Robert B. did not know how long he would have to remain in Seattle, but he was willing to come back and serve on the jury if the trial could be delayed to accommodate him. The prosecutor proposed seating an alternate juror; the defense objected.
The trial court remarked that “perhaps the most prudent course” would be to tell Juror Robert B. to phone the court after he arrived in Seattle and knew how long he had to stay, but ultimately rejected that course of action. Robert B.’s first priority, the court said, would and should be his ailing mother’s condition, not his duty of jury service; he could not be expected to go to Seattle, see his mother, and immediately turn around and fly back to California.
In discharging Juror Robert B., the trial court relied on Code of Civil Procedure section 233, which provides: “If, before the jury has returned its verdict to the court, a juror becomes sick or, upon other good cause shown to the court, is found to be unable to perform his or her duty, the court may order the juror to be discharged.” Similarly, Penal Code section 1089 provides: “If at any time, whether before or after the final submission of the case to the jury, a juror dies or becomes ill, or upon other good cause shown to the court is found to be unable to perform his or her duty, or if a juror requests a discharge and good cause appears therefor, the court may order the juror to be discharged . . . .”
The decision to discharge a juror and substitute an alternate under Penal Code section 1089 rests within the discretion of the trial court. (See
People v. Beeler
(1995)
Two Court of Appeal decisions under section 1089 are on point here. As in this case, both decisions involved medical emergencies. In
People v. Hall
(1979)
In
People v. Bell
(1998)
Upholding the trial court’s decision, the Court of Appeal in
Bell
stated: “[T]he [trial] court conducted an adequate inquiry into good cause, and caring for a sick or injured family member surely constitutes good cause. [Citation.] Furthermore, given the uncertain timing of his return and the fact so many jurors, alternates, and witnesses were waiting, the court was well within its discretion to discharge juror No. 2 and replace him with an alternate juror.”
(People
v.
Bell, supra,
We note also that two decisions of this court have upheld a trial court’s discretionary decision to discharge a juror whose family member died unexpectedly, rejecting the defense counsel’s suggestions that the court continue the trial until the juror could return.
(People
v.
Ashmus
(1991)
We conclude that when, as here, a juror has good cause to be absent from trial for an indefinite period, the trial court does not abuse its discretion in replacing that juror with an alternate juror.
*350 IV. Issues Relating to the Admissibility and Use of Evidence of Mental Illness by the Prosecution
A brief overview; clinical psychologist Dr. Chris Hatcher testified that crimes such as those committed in this case are generally committed by sexual sadists who derive sexual pleasure from carrying out a fantasy involving restraint and molestation of a child victim. He did not testify that defendant was such a sadist.
Defendant argues that the introduction of Dr. Hatcher’s testimony was an improper attempt by the prosecution to use extreme mental illness as an aggravating factor, contrary to
People v. Whitt
(1990)
The Attorney General responds that the testimony was admissible under section 190.3, factor (a), which allows the evidence of the “circumstances of the crime,” and that evidence admitted under factor (a) may be either aggravating or mitigating. (See, e.g.,
People v. Coddington
(2000)
Thus we face this question: Can the prosecution introduce evidence of a defendant’s mental illness as an aggravating consideration if that mental condition relates to the circumstances of the crime? Based upon the precedents of this court, we conclude that it can.
A. Trial Testimony and Rulings
1. Trial court’s rulings before Dr. Hatcher’s testimony
At trial, defendant moved in limine to exclude Dr. Hatcher’s testimony on the ground that evidence relating to mental illness was mitigating character evidence and thus could not be introduced by the prosecution in its case-in-chief and that the prejudicial effect of that evidence outweighed its probative value. After extensive argument, the trial court ruled that Dr. Hatcher’s testimony would be admissible on “the nature of the things that are involved” in the crime.
*351 2. Dr Hatcher’s testimony
Dr. Hatcher, a clinical psychologist, specializes in crimes involving the abduction of children. He has interviewed many persons who have committed such crimes, has conducted research on the subject, and is familiar with other studies.
Dr. Hatcher testified that people who commit crimes such as those involved here—the murder of a child accompanied by sexual abuse—go through a developmental process beginning with a fantasy at puberty of being sexually aroused by an image of “someone tied up, restrained, or tortured.” Over time, the fantasy becomes more serious and more detailed. Although some individuals can resist the impulse to carry out the fantasy, those that go forward still have a sense of right and wrong. They are able to plan, and they can defer acting until they get the right victim. The “drive and the need to realize the fantasy overcomes any consideration of what might happen to the victim.”
According to Dr. Hatcher, the perpetrator will gather instruments of restraint, such as handcuffs. During the crime, the victim is usually restrained and gagged. Unlike ordinary child molesters, sadistic pedophiles are not satisfied with mere sexual contact, but are sexually aroused by the “suffering and the discomfort of the child.” Sodomy, strangulation, and disfigurement are common characteristics of this kind of crime.
Dr. Hatcher reviewed various exhibits found in defendant’s apartment, including two newspaper articles about a notorious child molestation case in which the defendants were acquitted, and another article about a father who set fire to his young son. He also noted a highlighted list of names found in defendant’s residence, photographs of young children also found in defendant’s residence, and the rope and duct tape found in defendant’s car. He concluded that all of these were consistent with the typical fantasy of persons who commit crimes such as the crime here. Finally, with respect to the crime here, Dr. Hatcher found “a degree of planning, foresight, the development of a period of preparation over a substantial period of time, the focusing of a particular type of fantasy . . . regardless of the effect upon others.” 5
*352 B. Admissibility of Dr. Hatcher’s Testimony
1. The scope of section 190.3, factor (a)
Section 190.3, factor (a) permits both the prosecution and the defense to introduce evidence of “[t]he circumstances of the crime of which the defendant was convicted in the present proceeding.” In
People v. Edwards
(1991)
In other cases we have held that characteristics of the crime fall within the scope of section 190.3, factor (a).
People v. Lucero
(2000)
In light of these precedents, we conclude here that Dr. Hatcher’s testimony was admissible under section 190.3, factor (a). It explained the motivation for the crime, and the history and mental condition that produced such motivation. It explained the significance of the methods used to commit the crime—the handcuffs and duct tape, the act of sodomy, the post mortem burning of the body. It also explained how evidence found in defendant’s home and car showed that he premeditated the crime, and related to the manner in which it was committed. In short, Dr. Hatcher’s testimony was evidence relating to the circumstances of the crime.
2. Evidence of mental illness under factors (d) and (k) of section 190.3
Defendant insists, however, that Dr. Hatcher’s testimony falls under factors (d) and (k) of section 190.3, and that such evidence can only be
*353
mitigating. Factor (d) authorizes the penalty jury to consider evidence of “extreme mental or emotional disturbance.” We have held in previous cases that such evidence can only be mitigating. (E.g.,
People v. Montiel
(1993)
Factor (k) of section 190.3 authorizes consideration of “[a]ny other circumstance which extenuates the gravity of the crime even though it is not a legal excuse for the crime.” Under factor (k), the jury must consider any “ ‘aspect of [the] defendant’s character or record . . . that the defendant proffers as a basis for a sentence less than death.’ ”
(People v. Easley
(1983)
The Attorney General argues that Dr. Hatcher’s testimony does not implicate the principle that evidence of mental illness is mitigating because Dr. Hatcher testified only that a murder such as the one here is usually committed by a sadistic pedophile, not that defendant himself was a sadistic pedophile. The inference, however, is unmistakable: if the nature of the crime shows it was probably committed by a sadistic pedophile, and defendant admits committing the crime, then defendant is probably a sadistic pedophile. 6 Dr. Hatcher’s testimony, moreover, acquires relevance only to the extent that it does describe defendant. As the trial judge observed: “[I]t’s irrelevant unless you want to argue to somebody that he is a sexual sadist. Otherwise it’s meaningless.”
*354 3. Admissibility of evidence of mental illness that relates to the circumstance of the crime
The question before us, therefore, is whether on the facts of this case the prosecution could present evidence in its penalty case-in-chief from which the jury could infer that defendant is a sadistic pedophile and argue that inference as an aggravating consideration. Defendant contends that under
People v. Boyd
(1985)
Boyd
held that “the 1978 law prevents the prosecution from introducing, in its case-in-chief, aggravating evidence not contained in the various factors listed in section 190.3.”
(People v. Boyd, supra,
This conclusion is supported by two decisions of this court that discuss the scope of prosecutorial argument. In
People v. Carpenter
(1997)
People
v.
Avena, supra,
We distinguish two decisions in which prosecution evidence of mental illness or bad character was held inadmissible in the prosecution penalty case-in-chief. In
People
v.
Coleman, supra,
*356
In
People v. Edelbacher, supra,
4. Defendant’s federal constitutional claims
Defendant asserts that admitting evidence of his mental illness as an aggravating consideration violated his rights under the Fifth, Sixth, Eighth, and Fourteenth Amendments to the United States Constitution. Defendant, however, did not raise these contentions in the trial court.
Seeking to avoid the conclusion that his constitutional claims have been forfeited (see
People v. Williams
(1997)
C. Defendant’s Objection to Dr. Hatcher’s Testimony Under Evidence Code Section 352
Defendant contends that Dr. Chris Hatcher’s testimony should have been excluded under Evidence Code section 352, which permits the trial court, in its discretion, to exclude evidence “if its probative value is substantially outweighed by the probability that its admission will (a) necessitate undue consumption of time or (b) create substantial danger of undue prejudice, of confusing the issues, or of misleading the jury.”
*357
In
People
v.
Box, supra,
Here the issue of the admissibility of Dr. Hatcher’s testimony under Evidence Code section 352 is simply another way of looking at the question whether that evidence can be admitted as aggravating evidence. “Prejudice” in section 352 does not refer, simply to evidence that is damaging to the defendant. Instead, “ ‘[t]he “prejudice” referred to in Evidence Code section 352 applies to evidence which uniquely tends to evoke an emotional bias against the defendant as an individual
and which has very little effect on the issues.’
”
(People
v.
Karis
(1988)
Dr. Hatcher’s testimony provides a basis from which the jurors could infer that defendant is a sadistic pedophile, and premeditated and committed the crime for the sexual pleasure of the act, an aggravating consideration. If that is a permissible inference, as we have concluded, then the evidence is highly probative.
D. Exclusion of Dr. Hatcher’s Testimony as “Profile Evidence”
Defendant argues that Dr. Hatcher’s testimony amounted to the improper use of “profile evidence.” “Profile evidence,” however, is not a separate ground for excluding evidence; such evidence is inadmissible only if it is either irrelevant, lacks a foundation, or is more prejudicial than probative. In arguing the evidence here was inadmissible, defendant relies on two Court of Appeal decisions,
People v. Walkey
(1986)
In Walkey, the prosecution introduced expert evidence that the most important factor in the profile of a child abuser was that he had himself been abused as a child, elicited an admission from the defendant that he had been abused as a child, then argued that the defendant was guilty because he fit the profile of a child molester. (People v. Walkey, supra, 117 Cal.App.3d at *358 pp. 276-277.) The Court of Appeal held the evidence inadmissible and the prosecution’s argument improper. (Id. at p. 279.)
In
People
v.
Robbie, supra,
The evidence here is quite different. Profile evidence is objectionable when it is insufficiently probative because the conduct or matter that fits the profile is as consistent with innocence as guilt. The evidence here, however, does not have this problem. Defendant has pled guilty, and the circumstances of Paul Bailly’s murder themselves suggest a pathological cause. Dr. Hatcher’s testimony did not suggest that this type of crime is committed with any frequency, or at all, by persons who do not have the pathology he described. Defendant’s own penalty phase evidence emphasized his mental retardation, but it offered no alternative explanation why defendant would sodomize and kill an eight-year-old boy.
E. Admissibility of Newspaper Articles
While searching defendant’s residence on March 24 and 25, 1990, the police discovered copies of three newspapers. Two contained articles about a notorious child molestation case in which the defendants were acquitted. The third contained an article about a father who had set fire to his young son.
The prosecution argued that the articles were admissible to show that defendant had been fantasizing about child molesting and had been planning such a crime. Dr. Hatcher testified that persons who commit such crimes “almost always [have] a collection of newspaper or magazine articles that have direct relevance to the fantasy and to the subsequent assault that’s committed.” The defense objected to the admission of the newspaper articles as irrelevant and as more prejudicial than probative.
*359 The articles were relevant, both as indicia of defendant’s mental condition that led to the crime, and as evidence that defendant was planning, or at least contemplating, such a crime. If defendant’s sadistic purpose was an admissible aggravating circumstance, as we concluded earlier in this opinion (ante, at pp. 354-355), then there is no improper prejudicial effect from the evidence of the newspaper articles.
F. Rebuttal Testimony of Dr. Jeffrey Schaeffer
Defendant’s expert witnesses testified that defendant was mentally retarded, that he was a “moral imbecile” incapable of appreciating the social context and impact of his behavior, and that he had brain damage. In rebuttal, the prosecution called Dr. Jeffrey Schaeffer. He did not diagnose defendant, but testified over defendant’s objection that in defendant’s case the four diagnostic categories he would consider were antisocial personality, pedophilia, sexual sadism, and specific developmental disorders. He further testified that there is no correlation between brain damage and committing a premeditated crime of violence. There is also no correlation between learning disabilities or mental retardation and violent crime.
Defendant argues that Dr. Schaeffer’s testimony was improper rebuttal because defendant’s own experts had never discussed sexual sadism. We disagree. When, as here, a mental health expert offers a diagnosis, this opens the door to rebuttal testimony questioning that diagnosis or suggesting an alternative diagnosis. (See
People v. Carpenter, supra,
Defendant also contends that his evidence of brain damage and retardation was proper mitigating evidence even if those conditions did not cause the murder of Paul Bailly. (See
Eddings
v.
Oklahoma
(1982)
“ ‘The admission of rebuttal evidence rests largely within the sound discretion of the trial court and will not be disturbed on appeal in the absence of “palpable abuse.” ’ ”
(People v. Kelly
(1990)
*360 G. The Prosecutor’s Comments in Closing Argument About Dr. Hatcher’s Testimony
As noted earlier, Dr. Chris Hatcher testified about the kind of person who would commit the crimes charged in this case. We concluded that the jury could infer that defendant was such a person. (Ante, at p. 356.)
In his closing argument to the jury, the prosecutor asked: “Now, what were the inferences we can draw from Dr. Hatcher’s testimony about the defendant’s motive?” (Italics added.) He then made a series of assertions prefixed with the phrase “we know”: “we know” that defendant handcuffed and gagged the victim for sexual pleasure; “we know” that he enjoyed seeing the victim struggle for life; “we know” that he sodomized and strangled the victim “for purposes of sexual pleasure and to produce both terror and struggle.” Defendant objected, pointing out that Dr. Hatcher had described a hypothetical perpetrator. The trial court overruled the objection. The prosecutor then resumed his argument by asking the jury again what “inferences” could be drawn from Dr. Hatcher’s testimony.
Literally speaking, the prosecutor’s argument may have misstated the evidence. “We”—a term that presumably encompassed at least the prosecutor and the jurors—did not “know” defendant’s motivation and feelings. “We” could only infer them from Dr. Hatcher’s testimony. But this overstatement of the evidence is insignificant, because the prosecutor’s argument, taken as a whole, made it clear that he was not talking about proven facts, but about inferences that the jury could draw from Dr. Hatcher’s description of the kind of person who commits crimes such as those here. Thus, even assuming that the trial court should have sustained defendant’s objection, any eiror in not doing so would be harmless.
H. The Jury Instructions Relating to Dr. Hatcher’s Testimony
1. The instruction limiting the use of Dr. Chris Hatcher’s testimony
The trial court gave this limiting instruction: “The testimony of Dr. Chris Hatcher was received in evidence and may be considered by you only for the limited purpose of explaining, if it does, the meaning of certain pieces of evidence offered in this case, to explain the general phenomena of sexual fantasies and to provide information on the subject of the behavior and mental processes of children who are abducted for the purpose of violent sexual assault and persons who commit such crimes. He testified to a generalized body of knowledge. However, should you find that there are facts in this case which are or may be explained by such testimony you may *361 consider the testimony for that purpose. However, such evidence was not received and may not be considered by you, to prove that the defendant is a person of bad character ór that he has a disposition to commit crimes. Further, Dr. Hatcher did not examine [defendant] nor did he express any opinion about the defendant or how the crime actually occurred.” (Italics added.)
Defendant correctly observes that the inclusion of the italicized phrase permitted the jurors to consider Dr. Hatcher’s testimony as information relevant to defendant’s mental processes. But this observation simply returns us to the issue previously discussed: May the jury consider, as aggravating evidence under section 190.3, factor (a), evidence of defendant’s mental illness insofar as it relates to the circumstances of the crime? Our conclusion that it may do so resolves the controversy over the jury instruction; if the jurors can consider Dr. Hatcher’s testimony as evidence relating to defendant’s mental processes, it cannot be error to tell them they may do so.
2. Defendant’s proposed jury instructions
Defendant proposed five jury instructions relating to mental illness and mitigation. The trial court was not obliged to give any of these instructions, but exercised its discretion to give defendant’s proposed special instruction No. 6.
Special instruction No. 6 read, in pertinent part:
“You have been instructed that you may consider, as mitigation, any circumstance which extenuates the gravity of the crime even though it is not a legal excuse for the crime, and any sympathetic or other aspect of the Defendant’s character or record as a basis for a sentence less than death, whether or not those circumstances or aspects of the Defendant’s character are related to the offense.
“Circumstances surrounding the commission of the crime which you should consider include, but are not limited to, the following:
“1. Whether the Defendant acknowledged responsibility for the crime;
“2. Whether the crime involved a single victim;
“3. Whether the Defendant committed the offense while under the influence of a mental or emotional disturbance, which disturbance need not be extreme nor amount to legal insanity or an inability to form a specific intent. This includes, but is not limited to whether [defendant] has low self-esteem, or *362 suffers from a brain dysfunction, that has affected his ability to learn and may affect his judgment or perception.
“Mitigating factors also include any sympathetic, compassionate, merciful, or other aspect of Defendant’s background, character, record, or social, psychological or medical history, that the Defendant offers as a basis for a sentence less than death, whether or not related to the offense for which he is on trial. . . .”
Defendant argues that the trial court erred in rejecting defendant’s special instructions Nos. 7 and 8.
Defendant’s proposed special instruction No. 7 read: “The term ‘mental or emotional disturbance’ as used in these instructions includes any violent, intense, high-wrought or enthusiastic emotion including, but not limited to, fear, revenge, and the emotion induced by and accompanying or following any intent to commit a felony. [][] The presence of mental or emotional disturbance may only be considered by you as a factor in mitigation, and may not be considered as an aggravating factor.”
The trial court correctly rejected this instruction. Defendant’s assertion that any emotion that accompanies an intent to commit a felony constitutes a “mental or emotional disturbance” and cannot be considered as a factor in aggravation is incorrect. As we have explained, the presence of mental or emotional disturbance may be considered as an aggravating factor if admitted as relevant to the circumstances of the crime.
Defendant’s proposed special instruction No. 8 read:
“The term ‘mental disease or defect’ as used in these instructions is not limited to evidence which excuses the crime or reduces defendant’s culpability, but includes any degree of mental defect, disease or impairment which you may determine is of a nature that death should not be imposed.
“Such a mental disease or defect may be considered by you as a mitigating factor whether or not the mental condition caused the defendant to commit the offense, and whether or not the condition was operative at the time of the offense.
“The presence of mental disease or defect may only be considered by you as a factor in mitigation, and may not be considered as an aggravating factor.”
The first two paragraphs of this instruction correctly state the law. (See
Eddings
v.
Oklahoma, supra,
455 U.S. at pp. 113-114;
People v. Whitt, supra,
*363
V. Issues Relating to the Admissibility of Prosecution Evidence of Children’s Reactions to Sadistic Molestation
A. Dr Hatcher’s Testimony
Dr. Chris Hatcher interviewed children who had been sadistically molested, and on the basis of that experience described the stages such children go through. In the first stage, he said, the children felt that the experience is unreal, like watching a television show. Then the children realize that they are in danger and try to avoid it by making friends with the abductor. In the last stage the horrified children are filled with shame at the sodomy and increasingly aware that they may be killed.
B. Defendant’s Objections
1. Admissibility of the testimony under Evidence Code sections 702 and 801
Defendant contends that the admission of Dr. Chris Hatcher’s testimony concerning the experiences of child victims violates Evidence Code section 702, which provides that the testimony of a witness is inadmissible unless based on personal knowledge. Dr. Hatcher, however, was testifying as an expert witness pursuant to Evidence Code section 801, and Evidence Code section 702 by its terms does not apply to such testimony.
Defendant, however, points out that Evidence Code, section 801 only permits expert testimony on “a subject that is sufficiently beyond common experience that the opinion of an expert would assist the trier of fact.” He argues that the experiences of child victims of violent sexual assaults are not sufficiently beyond common experience that expert assistance is required. We disagree. Only a fraction of the general population, and presumably none of the jurors, has been personally victimized. Of course a juror can try to imagine what it would be like for a child to experience such an assault, but this kind of imagining does not substitute for expert testimony.
2. Admissibility of the testimony under Evidence Code section 352
Defendant contends that Dr. Hatcher’s testimony should have been excluded under Evidence Code section 352 as more prejudicial than probative. *364 This is an exact counterpart to his argument that Dr. Hatcher’s testimony about the characteristics of perpetrators should have been excluded under section 352, and it is rejected on the same grounds. (See ante, at pp. 355-356.)
3. Federal constitutional arguments
Defendant argues that the admission of Dr. Chris Hatcher’s testimony violated the Eighth and Fourteenth Amendments to the federal Constitution. He contends that the federal Constitution requires an “individualized” death penalty determination (see
Woodson
v.
North Carolina
(1976)
Finally, defendant claims that Dr. Hatcher’s testimony was so inflammatory that its admission denied him due process of law. (See
People v. Boyette
(2002)
VI. Other Evidentiary Issues
A. Victim Impact Evidence
Defendant argues that the trial court erred when it admitted, over defense objection, testimony by Mary Bailly, the mother of Paul Bailly, the murder *365 victim. 7 She testified: “I don’t think the pain will ever go away ... I think the worst part of it is, is what goes on in my mind what happened to him. What he went through is—is just very difficult.”
The United States Supreme Court held victim impact testimony admissible in
Payne v. Tennessee
(1991)
People v. Stanley
(1995)
B. Evidence of Prison Conditions
The trial court sustained the prosecutor’s objection to defense expert evidence offered to show “what occurs in prison and what prison means as a form of punishment.” Defendant challenges this ruling.
As defendant recognizes, we have in the past held: “evidence of the conditions of confinement that a defendant will experience if sentenced to life imprisonment without parole is irrelevant to the jury’s penalty determination because it does not relate to the defendant’s character, culpability, or the circumstances of the offense.”
(People
v.
Quartermain
(1997)
C. Exclusion of Testimony That Witness Believed Defendant Should Not Be Executed
Defendant’s family hired educational therapist Janice Foster to help defendant with his learning problems from 1984 through 1987, when defendant was 15 to 17 years old. Called as a defense witness, she testified that she liked defendant because he was eager and friendly, but that socially and emotionally he was much younger than his chronological age and lacked a fundamental understanding of the effects of his conduct. When asked whether she wanted “to see [defendant] in the gas chamber,” she answered: “[he is] a very young person in his mind. . . . It’s horrible when a child dies.” The prosecution objected and moved to strike the testimony. The defense made an offer of proof: Foster would testify that she thought the death penalty was not appropriate for defendant because she considered him the equivalent of a child, and killing a child was not appropriate. The trial court, after noting that there was no authority directly on point, granted the prosecutor’s motion on the ground that “third party witnesses ought not to be able to testify concerning the justice of one penalty or another.”
In
People v. Sanders
(1995)
This issue arose again in
People v. [Gregory
Calvin]
Smith
(2003)
From these cases we can distill a general rule: evidence that a family member or friend wants the defendant to live is admissible to the extent it relates to the defendant’s character, but not if it merely relates to the impact of the execution on the witness. Here the relevance of Janice Foster’s testimony to defendant’s character and personality is clear, because Foster’s opinion was based on her familiarity with defendant’s emotional and social immaturity, a recognized mitigating consideration.
Admissibility of course requires that the witness have a significant relationship with the defendant. Here, Janice Foster’s three-year tutorial relationship with defendant qualifies. Neither the prosecutor’s objection to her testimony, nor the trial court’s ruling excluding that testimony, was based on the nature of her relationship with defendant.
Instead, the prosecutor’s objection and the court’s ruling were based on the position that opinion on the appropriateness of the death penalty—either generally or in this particular case—was inadmissible. But
People v. Smith, supra,
*368
Thus, the trial court erred in excluding Foster’s testimony. We use the
Chapman
test in evaluating the effect of erroneously excluding mitigating evidence; reversal is required “unless the state proves ‘beyond a reasonable doubt that the error complained of did not contribute to the verdict obtained.’ ”
(People
v.
Lucero
(1988)
D. Evidence of Prior Violent Acts
We earlier summarized the evidence of four prior violent acts by defendant. (See pp. 344-345,
ante.)
Evidence of unadjudicated violent acts is admissible under section 190.3, factor (b). (See
People v. Michaels, supra,
In two memorandum opinions dissenting from the denial of certiorari, United States Supreme Court Justice Thurgood Marshall questioned whether evidence of unadjudicated violent acts should be excluded as unreliable. (See
Robertson v. California
(1989)
Defendant argues that his previous crimes, in particular the alleged false imprisonment of young Brian Francis and the alleged battery of young Brian Due, are such trivial matters that they have little bearing on the appropriateness of the death penalty. He questions whether these acts constituted crimes, maintaining that they are simply incidents of children’s play. But defendant’s act of holding Brian Francis to a wall and threatening to hit him with a ball if he tried to run constitutes false imprisonment (see § 236;
People v. Bamba
(1997)
VII. Issues Relating to the Method of Determining Penalty
A. The Listing of Aggravating and Mitigating Factors
CALJIC No. 8.85 lists the factors to be considered by the jury in making its penalty decision. Defendant contends that the trial court should have deleted those factors inapplicable to this case. We rejected that contention in
People v. Sapp
(2003)
Defendant proposed a special jury instruction stating that the only applicable aggravating factors in this case were the circumstances of the murder and other criminal activity involving force or violence. The trial court did not err in rejecting this instruction. We have repeatedly said that a trial court need not specify whether factors are aggravating or mitigating. (See
People
v.
Pollock, supra,
The trial court rejected defendant’s proposed special instruction No. 4, which stated: “The absence of prior felony convictions is a significant mitigating circumstance in a capital case, where the accused frequently has an extensive criminal past.” The trial court, however, did instruct the jury to consider “the presence or absence of any prior felony or misdemeanor conviction.” 8 Thus, the jurors were told that they could consider defendant’s lack of prior convictions as a mitigating consideration. Whether it was a “significant” consideration was a matter for the jurors to determine.
B. The Weighing of Aggravating and Mitigating Factors
1. Defendant’s objections to CALJIC No. 8.88
CALJIC No. 8.88 explains to the jury how it should arrive at the penalty decision. Defendant asserts this instruction violates his rights under the Fifth, Sixth, Eighth, and Fourteenth Amendments to the federal Constitution.
*370
He argues that CALJIC No. 8.88’s language, directing the jury to determine whether aggravation “so outweighs” mitigation as to warrant death, is unconstitutionally vague. We rejected that contention in
People v. Davenport, supra,
Defendant contends that CALJIC No. 8.88 is incorrect because it refers to whether the death penalty is “warranted” instead of whether it is “appropriate.” In
People
v.
Arias
(1996)
Defendant also contends that CALJIC No. 8.88 does not convey to the jury that a life sentence is mandatory if aggravation does not outweigh mitigation. We disagree. The standard instruction permits a death penalty only if aggravation is so substantial in comparison with mitigation that death is warranted; if aggravation failed even to outweigh mitigation, it could not reach this level. (See
People
v.
Medina
(1995)
Defendant further contends that CALJIC No. 8.88 implies that death is the only appropriate sentence if aggravation is “so substantial in comparison with the mitigating circumstances that it warrants death instead of life without parole.” He insists that this language is inconsistent with the principle that the jury can return a life verdict even if aggravating circumstances outweigh those in mitigation. (See
People
v.
Brown, supra,
40 Cal.3d at pp. 538-541.) There is no inconsistency. A jury is free to return a life verdict even if aggravation outweighs mitigation. But the jury is not free to return a life verdict regardless of the evidence. If aggravating circumstances are so substantial in comparison with mitigating circumstances as to warrant the death penalty, then death is the appropriate penalty.
(People v. Arias, supra,
Finally, defendant argues that the instruction failed to inform the penalty jury of the burden of persuasion. There is no penalty phase burden of
*371
persuasion. (See
People v. Carpenter, supra,
2. Defendant’s proposed supplemental instructions
Defendant’s proposed special instruction B stated: “The jury has the option to reject death if the evidence arouses sympathy, mercy, or compassion to the point that they jury feels that death is not the proper penalty in this case.” This instruction was largely duplicative of defendant’s special instruction No. 6, which the trial court accepted. That instruction told the jury that it could consider “any sympathetic, compassionate, merciful, or other aspect of Defendant’s background, character, record, or social, psychological or medical history, that the Defendant offers as a basis for a sentence less than death, whether or not related to the offense for which he is on trial.” In any event, CALJIC No. 8.88 adequately informed the jurors that they could consider sympathy, mercy, and compassion in deciding whether death was the appropriate penalty. (See
People
v.
Bolin
(1998)
The trial court also rejected defendant’s proposed special instruction H: “The weight to be given to the factors in aggravation and mitigation is a matter for each juror to determine . . . [and accordingly] one mitigating factor can sometimes outweigh a number of aggravating factors.” The trial court gave a jury instruction based on CALJIC No. 8.88, which told the jurors: “You are free to assign whatever moral or sympathetic value you deem appropriate to each and all of the various factors you are permitted to consider.” The instruction then told the jurors: “You may, but are not required to return a judgment of death if each of you are persuaded that the aggravating circumstances are so substantial in comparison with the mitigating circumstances that it warrants death instead of life without parole.” In
People v. Bolin, supra,
*372 3. The prosecutor’s comment on CALJIC No. 8.88 during closing argument
During closing argument, the prosecutor read CALJIC No. 8.88 to the jury and commented upon it: “There are really two components to this process. One is, is the death penalty appropriate in your mind? And second, do the aggravating factors outweigh the mitigating factors, which is our true burden in this case, proving that the aggravating factors outweigh the mitigating factors. And if it is both appropriate and if the aggravating factors outweigh the mitigating factors, then you should vote for death.” The trial court overruled defendant’s objection that the prosecutor had misstated the law.
The prosecutor’s argument correctly explained the weighing process under CALJIC No. 8.88: the jury weighs the aggravating circumstances as compared to the mitigating circumstances and determines whether the death penalty is appropriate. (See
People v. Brown, supra,
40 Cal.3d at pp. 538-539.) It is true that the prosecutor’s “burden”—if such a term applies to a trial in which neither side has the burden of proof—is not merely to show that aggravation outweighs mitigation, but to show it outweighs it to such an extent that death is the appropriate penalty. But there is no indication that the jury was misled thereby. The trial court correctly instructed the jury under CALJIC No. 8.88; we presume that the jury followed that instruction.
(People
v.
Sanchez, supra,
VIII. Alleged Prosecutorial Misconduct in Closing
Argument
In his closing argument to the jury, the prosecutor made these comments on the arguments of defense counsel: “ ‘You don’t do this crime unless there’s something wrong with you.’ That was one of [defense counsel’s] statements. . . . [T]he logical conclusion from that would be what? It would be the worse the crime, the less people should get the death penalty because the worse the crime, ... the more that’s proof that there’s something wrong with somebody. ... I suppose by [defense counsel’s] reasoning, we should say if Hitler were alive, he shouldn’t get the death penalty because there must really be something wrong with a guy who commits mass murder and puts millions of people to death in gas chambers.”
*373 Defendant objected to the reference to Hitler. The trial court overruled the objection. It observed: “The Hitler argument is prohibited when it comes with respect to a comparison to the defendant, which was not done. . . . That wasn’t done here. It was an extrapolation in argument that may be met with other argument.”
We agree with the trial court. The prosecutor was not comparing defendant to Hitler, but was simply testing the logic of the defense argument. (See
People v. McDermott
(2002)
IX. Cumulative Prejudice
Earlier, we identified two errors: (1) the court’s refusal to permit witness Foster to testify that she did not want defendant to be executed, and her reasons for that opinion
(ante,
at pp. 366-367) and (2) the trial court’s failure to sustain an objection to the prosecutor’s assertion at closing argument that “we know” facts were not matters of direct proof, but only of inference
(ante,
at p. 360). The first is the most serious error but, as we explained earlier, the exclusion of this evidence could not have affected the outcome of the trial. (See
ante,
at p. 368.) The prosecutor’s “we know” comments, even if construed as going beyond the evidence, were effectively cured by his later comments. (See
ante,
at p. 360.) We conclude that it is not reasonably possible
(People v. Michaels, supra,
X. Constitutionality of the California Death Penalty
Statute
Citing the Fifth, Sixth, Eighth, and Fourteenth Amendments to the federal Constitution, defendant raises numerous constitutional objections to the California death penalty law. All have been previously rejected in decisions of this court.
Neither the breadth of “circumstances of the crime” in factor (a) of section 190.3, nor disagreement about what circumstances are aggravating, results in arbitrary and capricious application of the death penalty. (See
Tuilaepa v. California, supra,
512 U.S. at pp. 975-976;
People v. Jenkins
(2000)
Defendant has not shown that the California law fails adequately to narrow the class of persons eligible for the death penalty. (See
People v. Michaels,
*374
supra,
The federal Constitution does not require that a state death penalty law impose a burden of proof on the prosecution to prove death is the appropriate penalty, either beyond a reasonable doubt (see
People v. Arias, supra,
The jury is not required to agree unanimously on what aggravating factors exist.
(People v. Danks
(2004)
California’s death penalty law is not unconstitutional because it permits the jury to consider evidence of unadjudicated criminal activity (see
ante,
at p. 368), does not require the prosecution to prove such activity beyond a reasonable doubt
(People
v.
Ochoa, supra, 26
Cal.4th at p. 453), and does not require the jury to find such activity by a unanimous verdict
(People v. Michaels, supra,
28 Cal.4th at pp. 541-542;
People v. Alcala
(1992)
The terms
“extreme
mental or emotional disturbance” in section 190.3, factor (d), and
“extreme
duress” and
“substantial
domination” in factor (g) (italics added) do not render the statute invalid.
(People v. Jones
(1997)
The absence of intercase proportionality review does not invalidate California’s death penalty. (See
People v. Lenart
(2004)
Finally, defendant contends that California’s death penalty law violates international norms. But “[i]ntemational law does not prohibit a sentence of death rendered in accordance with state and federal constitutional and statutory requirements.”
(People
v.
Hillhouse
(2002)
Disposition
The judgment is affirmed.
George, C. J., Baxter, J., Werdegar, J., Chin, J., Brown, J., and Moreno, J., concurred.
Appellant’s petition for a rehearing was denied April 27, 2005, and the opinion was modified to read as printed above.
Notes
All statutory references are to the Penal Code unless otherwise noted.
Defendant did not explicitly contend that the prosecutor’s challenges violated the principles of
Batson v. Kentucky
(1986)
In
People v. Johnson
(2003)
According to the trial court, it was Donna V., not Donna T., who hesitated. Defendant did not recall any hesitation.
Dr. Hatcher also testified concerning the experiences of children subjected to sadistic molestation. We discuss that evidence, and defendant’s objections to it, in part V of this opinion. (See post, at p. 363 et seq.)
Even assuming that a limiting instruction could prevent the jury from drawing that inference, the instruction given here did not do so. Although it told the jurors that they could not use Dr. Hatcher’s testimony to prove that defendant was a person of bad character or had a disposition to commit crimes, it specifically allowed the jurors to draw inferences about “the behavior and mental processes of . . . persons who commit such crimes.”
In a motion in limine in the trial court, defendant contended that the error violated his rights under the due process clause of the Fourteenth Amendment and the cruel and unusual punishment clause of the Eighth Amendment to the federal Constitution.
CALJIC No. 8.85, incorporating section 190.3, factor (c), directs the jury to consider the presence or absence of prior felony convictions. At defendant’s request, the trial court modified this instruction to include misdemeanor convictions.
