
939 N.E.2d 352 (2010)
238 Ill.2d 391
The PEOPLE of the State of Illinois, Appellee,
v.
Italo SANDERS, Appellant.
No. 109014.
Supreme Court of Illinois.
October 7, 2010.
*354 Randolph N. Stone, Herschella G. Conyers, of chicago, Kiersten Fletcher, Greg Cheyne, S. Neil Anderson, Hewot Shankute, Sharon Yecies, law students, for Appellant.
Lisa Madigan, Atty. Gen. of Springfield, Anita Alvarez, State's Atty., of Chicago (Alan J. Spellberg, Kathryn A. Schierl, Annette Collins, Asst. State's Attorneys, of counsel), for the People.

OPINION
Justice GARMAN delivered the judgment of the court, with opinion.
In 1994, defendant, Italo Sanders, was convicted in the circuit court of Cook County of first degree murder and sentenced to 40 years in prison. The appellate court affirmed his conviction. People v. Sanders, 284 Ill.App.3d 1123, 237 Ill. Dec. 237, 708 N.E.2d 1277 (1996) (unpublished order under Supreme Court Rule 23). In November 2001, defendant filed a postconviction petition, which the circuit court dismissed. After the appellate court remanded for second-stage proceedings, the circuit court advanced the petition to third-stage proceedings. Following oral argument, the circuit court granted the State's motion to dismiss. The appellate court affirmed. 393 Ill.App.3d 152, 331 Ill.Dec. 866, 911 N.E.2d 1096.

BACKGROUND
Defendant was charged with the murder of John Pinkerton, which occurred on January 24, 1992. Pinkerton was shot in a stairwell of the Robert Taylor Homes in Chicago, where he was walking with Alexander Robinson and seven-year-old Manuel Woods. Two months later, Pinkerton died from complications of his injuries. Prior to trial, defendant filed a motion in limine to preclude the State from introducing evidence related to street gangs. This evidence consisted of the testimony of Michael Stewart, who was Pinkerton's brother. At the hearing on defendant's motion, defense counsel told the court that two days after the shooting, Stewart saw defendant at the Robert Taylor Homes and asked defendant who had shot Pinkerton. Defendant allegedly replied that he could not tell Stewart, but that it was "BD business" and that Pinkerton had not been the intended target. Defendant asked Stewart if Pinkerton was dead and Stewart said no. Defendant smiled and walked away. The trial court denied defendant's motion, finding that the proposed evidence explained an otherwise inexplicable murder and that the probative value of the evidence outweighed any potential prejudice to defendant.
During jury selection, defense counsel submitted several questions to the trial court concerning possible gang contact or bias. The court refused to ask the questions, stating that an individual juror's opinion about gangs was not relevant and noting that the submitted questions were highly subjective and might serve to inflame the members of the venire.
At defendant's trial, then nine-year-old Manuel Woods testified that on January 24, 1992, he lived at the Robert Taylor Homes. His cousin, Michael Stewart, also lived there, on the same floor as Manuel. Around dinnertime, Pinkerton and Robinson *355 came over to Manuel's apartment. They stayed for a while and then left. Manuel went with them. They were going to Stewart's apartment to watch a basketball game. They started walking down the hallway. Manuel was holding Pinkerton's hand. As they approached the elevator and stairway, Manuel heard gunshots. Pinkerton was "jumping." Manuel saw defendant at the top of the staircase. He was approximately 12 to 15 feet from Manuel. Defendant was holding a gun and shooting at Pinkerton, who pushed Manuel out of the way. Manuel ran to Stewart's apartment. Manuel stated that he went to the police station with his mother and identified defendant in a lineup. He had previously seen defendant more than once at the Robert Taylor Homes.
On three occasions, the jury was shown a photograph of the stairwell at Robert Taylor Homes where the shooting took place. The photo showed gang graffiti on the walls of the stairwell which read, "GDs Die, Bds live."
Michael Stewart testified that a few days after the shooting, he saw defendant walking on the fifth floor of the Robert Taylor Homes. Stewart had seen defendant in the building several times, but did not know his name. Stewart told defendant that he had seen him in the stairwell the night Pinkerton was shot and he asked defendant who had shot Pinkerton. Defendant asked if Pinkerton was dead and, upon being told Pinkerton was alive, defendant said "it was BD business" and all he could tell Stewart was that Pinkerton was not the intended target. Stewart testified that the term "BD" meant Black Disciples, which was a street gang.
Sometime later, the police recovered a gun from defendant. A firearms expert testified that the bullets recovered from Pinkerton had the same class characteristics as the gun and could have been fired from the gun. However, the expert was unable to include or exclude the gun as the murder weapon.
Defendant called three witnesses to testify. His mother, sister, and girlfriend all testified that the three of them and defendant were in defendant's mother's apartment at the Robert Taylor Homes at the time of the shooting. They heard the shots and ran out to see what happened. Afterward, they went back into the mother's apartment and stayed there until defendant walked his girlfriend home about 10 p.m.
During closing arguments, the prosecutor referred to defendant's alleged gang affiliation and the alleged gang motive for the shooting by repeatedly referring to Stewart's testimony that defendant told him Pinkerton's shooting was "BD business." The jury convicted defendant and the trial court sentenced him to 40 years in prison.
On direct appeal, the appellate court affirmed defendant's conviction and sentence. Before the appellate court, defendant argued, inter alia, that the trial court had erred in refusing to ask potential jurors questions during voir dire concerning potential bias against gangs. The appellate court rejected this argument, concluding that the trial court's questions were reasonably calculated to expose latent bias and prejudice. Sanders, 237 Ill.Dec. 237, 708 N.E.2d 1277 (unpublished order under Supreme Court Rule 23).
On November 16, 2001, defendant filed a petition for postconviction relief, in which he alleged that the trial court erred in failing to voir dire potential jurors on the subject of gang bias. Defendant alleged that this failure, together with the State's reliance on gang-related evidence at trial, deprived him of his right to an impartial jury. In support, he cited this court's *356 decision in People v. Strain, 194 Ill.2d 467, 252 Ill.Dec. 65, 742 N.E.2d 315 (2000), in which the court held that, where gang evidence is to be integral to the defendant's trial, the trial court must ask potential jurors during voir dire about any biases they may have against gangs. The trial court dismissed the petition at the first stage as untimely. The appellate court reversed the dismissal and remanded the cause for second-stage proceedings. People v. Sanders, 341 Ill.App.3d 1111, 304 Ill.Dec. 662, 853 N.E.2d 451 (2003) (unpublished order under Supreme Court Rule 23). On remand, the trial court found the petition was not untimely or barred by res judicata, based upon a 2002 appellate court decision, People v. Gardner, 331 Ill. App.3d 358, 264 Ill.Dec. 622, 771 N.E.2d 26 (2002), which found Strain to be applicable on collateral review. Thus, the trial court denied the State's motion to dismiss on those grounds. The court advanced the petition to third-stage proceedings to determine whether the gang evidence at defendant's trial was integral to the trial within the meaning of Strain. The court reviewed transcripts from the trial and heard oral argument. The court granted the State's motion to dismiss on the basis that the gang evidence could not have been considered integral to the trial.
On appeal, the appellate court held that Strain announced a new rule and thus could not be applied retroactively to defendant's case. The court rejected defendant's reliance on Gardner, finding that, although Strain was doctrinally consistent with prior law, it represented a clear break in placing a "stringent limitation upon the broad range of discretion traditionally afforded to the trial court." 393 Ill.App.3d at 166, 331 Ill.Dec. 866, 911 N.E.2d 1096. The appellate court concluded that, because Strain was not applicable to defendant's case, his postconviction petition was barred by res judicata. In addition, the appellate court noted that, even if it agreed with the Gardner court's analysis, it would find that defendant's petition was barred as untimely. 393 Ill.App.3d at 167, 331 Ill.Dec. 866, 911 N.E.2d 1096.

ANALYSIS
Defendant raises three arguments in this appeal: (1) this court's decision in Strain did not announce a new constitutional rule of criminal procedure and therefore applies retroactively to defendant's case; (2) defendant's postconviction petition is not barred by res judicata and the late filing of his petition was not due to his culpable negligence; and (3) under the holding of Strain, the gang evidence was integral to defendant's trial and the trial court's failure to voir dire potential jurors on the issue of gang bias thus deprived him of a fair trial.
Defendant argues that this court's decision in Strain applies retroactively to his case.
A postconviction proceeding is a collateral attack on a prior conviction in which a defendant may challenge his conviction or sentence on the basis that his substantial constitutional rights were violated. People v. Beaman, 229 Ill.2d 56, 71, 321 Ill.Dec. 778, 890 N.E.2d 500 (2008). Postconviction claims are limited to those claims that were not and could not have been previously adjudicated on direct appeal. People v. Johnson, 206 Ill.2d 348, 356, 276 Ill.Dec. 399, 794 N.E.2d 294 (2002). Claims that were raised and decided on direct appeal are barred by res judicata and those claims that could have been raised, but were not, are considered waived. People v. Towns, 182 Ill.2d 491, 502-03, 231 Ill.Dec. 557, 696 N.E.2d 1128 (1998). Here, the trial court advanced defendant's petition to third-stage proceedings. However, the court heard no new *357 evidence; rather, the court reviewed the transcripts from the trial and heard arguments of counsel. In addition, the judge who presided over the postconviction hearing was not the same judge who presided at defendant's trial. Defendant argues, and the State does not disagree, that the judge had no special expertise or familiarity with defendant's trial. In such circumstances, this court has applied a de novo standard of review. See People v. Caballero, 206 Ill.2d 65, 88, 276 Ill.Dec. 356, 794 N.E.2d 251 (2002). In addition, this court applies a de novo standard of review as to questions of law. In re D.S., 198 Ill.2d 309, 321, 261 Ill.Dec. 281, 763 N.E.2d 251 (2001).
In Strain, the defendant was charged with murder. The State's theory was that the defendant, who was a member of the Black Disciples street gang, shot the victim while attempting to take revenge on a rival gang, the Gangster Disciples, for allegedly shooting the defendant at an earlier time. During voir dire, the trial court asked potential jurors if they, any member of their family, or close friend had been involved in a gang. The court refused defense counsel's request to ask each prospective juror whether the juror would find the defendant less believable if the juror learned that the defendant belonged to a gang. During trial, gang members testified, a statement made by defendant to the police concerning the gang-related motive for the shooting was admitted into evidence, and defendant testified, denying that he made the statement. The trial court allowed the State to introduce evidence at trial of other gang-related crimes in an effort to bolster the State's theory regarding the motive for the murder. The defendant was convicted. This court noted two matters of crucial importance: (1) gang information permeated the testimony of almost every witness at trial; and (2) the outcome of the trial turned upon the credibility of the defendant, the testifying police officers, and members of the Gangster Disciples. Strain, 194 Ill.2d at 473, 252 Ill.Dec. 65, 742 N.E.2d 315.
This court noted that article I, section 13, of the Illinois Constitution of 1970 (Ill. Const. 1970, art. I, § 13) guarantees a "right of trial by jury as heretofore enjoyed." The court had previously construed those words to mean the right to trial by jury as it existed under the common law, which entails the right to have the facts determined, under the supervision of a judge, by the unanimous verdict of 12 impartial jurors who possess the qualifications and are selected in the manner prescribed by law. The court observed that the scope and extent of the voir dire examination is left to the discretion of the trial court; however, that discretion must be exercised in a manner consistent with the purpose of voir dire, which is to obtain enough information about the beliefs and opinions of potential jurors as would allow for the removal of those members of the venire whose minds are so closed by bias and prejudice that they cannot apply the law as instructed by the trial court. A failure to permit pertinent inquiries to reveal any such prejudices may constitute reversible error. Strain, 194 Ill.2d at 476-77, 252 Ill.Dec. 65, 742 N.E.2d 315.
This court noted it had previously recognized that street gangs are regarded with disfavor by other segments of society and that, especially in metropolitan areas, there may be strong prejudice against gangs. For this reason, this court has held that evidence of gang membership or gang-related activity is admissible only where there is sufficient proof that such membership or activity is related to the crime charged. Strain stated that these same concerns dictated its holding that "when testimony regarding gang membership *358 and gang-related activity is to be an integral part of the defendant's trial, the defendant must be afforded an opportunity to question the prospective jurors, either directly or through questions submitted to the trial court, concerning gang bias." Strain, 194 Ill.2d at 477, 252 Ill.Dec. 65, 742 N.E.2d 315.
The question before us is whether Strain announced a new constitutional rule of criminal procedure. In Teague v. Lane, 489 U.S. 288, 109 S.Ct. 1060, 103 L.Ed.2d 334 (1989), the United States Supreme Court set forth standards for determining when a case announces a new rule. The Court stated that a case announces a new rule when it breaks new ground or imposes a new obligation on the states or federal government. The result must not be "dictated by precedent existing at the time the defendant's conviction became final." (Emphasis in original.) Teague, 489 U.S. at 301, 109 S.Ct. at 1070, 103 L.Ed.2d at 349. Generally, new rules are not to be applied retroactively to cases on collateral review except in two instances: (1) if the rule places certain kinds of primary, private individual conduct beyond the power of the criminal-law-making authority to proscribe; or (2) if the rule requires the observance of those procedures that are implicit in the concept of ordered liberty. The Court described rules that come within the second exception as "watershed rules of criminal procedure" and stated that they should be limited to those new procedures without which the likelihood of an accurate conviction is seriously diminished. Teague, 489 U.S. at 311, 313, 109 S.Ct. at 1076, 1077, 103 L.Ed.2d at 356, 358.
The purpose of the Teague framework is to promote the government's interest in the finality of criminal convictions (Teague, 489 U.S. at 309, 109 S.Ct. at 1074, 103 L.Ed.2d at 355) and to validate "reasonable, good-faith interpretations of existing precedents made by state courts even though they are shown to be contrary to later decisions" (Butler v. McKellar, 494 U.S. 407, 414, 110 S.Ct. 1212, 1217, 108 L.Ed.2d 347, 356 (1990)). "`Application of constitutional rules not in existence at the time a conviction became final seriously undermines the principle of finality which is essential to the operation of our criminal justice system. Without finality, the criminal law is deprived of much of its deterrent effect.'" People v. Flowers, 138 Ill.2d 218, 239, 149 Ill.Dec. 304, 561 N.E.2d 674 (1990), quoting Teague, 489 U.S. at 309, 109 S.Ct. at 1074, 103 L.Ed.2d at 355.
It is "often difficult" to determine whether a case announces a new rule. Teague, 489 U.S. at 301, 109 S.Ct. at 1070, 103 L.Ed.2d at 349. This is particularly true where the new decision is reached by an extension of the reasoning of prior cases. Butler, 494 U.S. at 412-13, 110 S.Ct. at 1216, 108 L.Ed.2d at 355. "[T]he fact that a court says that its decision is within the `logical compass' of an earlier decision, or indeed that it is `controlled' by a prior decision, is not conclusive for purposes of deciding whether the current decision is a `new rule' under Teague." Butler, 494 U.S. at 415, 110 S.Ct. at 1217, 108 L.Ed.2d at 356. Rather, the task is to determine whether courts considering the defendant's claim at the time his or her conviction became final "would have felt compelled by existing precedent to conclude that the rule * * * was required by the Constitution." Saffle v. Parks, 494 U.S. 484, 488, 110 S.Ct. 1257, 1260, 108 L.Ed.2d 415, 424 (1990); People v. Morris, 236 Ill.2d 345, 360, 338 Ill.Dec. 863, 925 N.E.2d 1069 (2010). This court adopted the Teague retroactivity standards in Flowers, which held that this court's decision in People v. Reddick, 123 Ill.2d 184, 122 Ill.Dec. 1, 526 N.E.2d 141 (1988), constituted *359 a new constitutional rule of criminal procedure and was not applicable to postconviction proceedings. Flowers, 138 Ill.2d at 240, 149 Ill.Dec. 304, 561 N.E.2d 674.
Defendant argues that this court's holding in Strain derives from the constitutional principle that an accused has the right to an impartial jury. He notes this court has previously stated in People v. Cloutier, 156 Ill.2d 483, 495-96, 190 Ill.Dec. 744, 622 N.E.2d 774 (1993), that the purpose of voir dire is to ascertain sufficient information about the beliefs and attitudes of prospective jurors to allow removal of those venire members whose biases and prejudices would prevent them from applying the law as instructed by the trial court. Defendant argues that Strain applied this principle in light of the judicially recognized bias against gang affiliation. Defendant also points to prior cases in which he says this court and the appellate court recognized the potential for bias against gangs among prospective jurors. Thus, defendant argues that Strain was motivated by concerns regarding the prejudicial effect of gang evidence and it relied on prior case law in reaching its holding. For these reasons, Strain did not announce a new rule.
Defendant particularly emphasizes Strain's statement, after citing cases that had recognized the prejudice against gangs, that "[t]he same concerns regarding the prejudicial effect of gang evidence dictate our holding that, when testimony regarding gang membership and gang-related activity is to be an integral part of the defendant's trial," the trial court must question potential jurors about any bias against gangs. (Emphasis added.) Strain, 194 Ill.2d at 477, 252 Ill.Dec. 65, 742 N.E.2d 315.
Defendant notes that the appellate court in People v. Gardner, 331 Ill.App.3d 358, 264 Ill.Dec. 622, 771 N.E.2d 26 (2002), held that Strain did not announce a new rule. Gardner found that Strain had premised its holding on prior case law concerning the purpose of voir dire, the procedures outlined in Rule 431 (177 Ill. 2d R. 431), and constitutional safeguards. Gardner also noted Strain's citation of cases recognizing the possibility of strong prejudice against gangs in large metropolitan areas. Gardner found that Strain did not announce a new rule, given its reliance on precedent and long-standing principles surrounding voir dire. Thus, the Gardner court stated that the holding of Strain may be applied retroactively to cases on collateral review. Gardner, 331 Ill.App.3d at 367, 264 Ill.Dec. 622, 771 N.E.2d 26.
The State argues that, although Strain may have been doctrinally consistent with the rules regulating voir dire and with case law regarding public disapproval of gang membership, Strain was the first time this court had mandated gang-bias inquiry during voir dire based upon, not just an abuse of discretion, but a denial of the constitutional right to an impartial jury. The State argues this conclusion did not necessarily follow from this court's rules or existing case law.
This court has long recognized that the scope and extent of voir dire examination rests within the discretion of the trial court. People v. Lobb, 17 Ill.2d 287, 300, 161 N.E.2d 325 (1959); People v. Buss, 187 Ill.2d 144, 176, 240 Ill.Dec. 520, 718 N.E.2d 1 (1999); People v. Williams, 164 Ill.2d 1, 16, 206 Ill.Dec. 592, 645 N.E.2d 844 (1994). Although Rule 431 requires the trial court to allow counsel to "supplement the examination by such direct inquiry as the court deems proper for a reasonable period of time depending upon the length of the examination by the court, the complexity of the case, and the nature of the charges," this court has held that the trial court *360 retains discretion to determine what direct questioning will be allowed, as long as the court exercises its discretion in accordance with the requirements of the rule. See People v. Garstecki, 234 Ill.2d 430, 334 Ill.Dec. 639, 917 N.E.2d 465 (2009). Indeed, this court in Garstecki even noted that it was not impossible to conceive of a case in which the trial court might properly conclude, based upon the factors cited above, that no attorney questioning should be permitted. Garstecki, 234 Ill.2d at 444, 334 Ill.Dec. 639, 917 N.E.2d 465.
Defendant cites several cases that he believes support his contention that Strain did not announce a new rule. His reasoning is that these cases recognized the disfavor in which street gangs are held by the general public, directly leading, in his view, to this court's holding in Strain.
In People v. Jimenez, 284 Ill.App.3d 908, 220 Ill.Dec. 97, 672 N.E.2d 914 (1996), the defendant was charged with murder. The shooting was gang-related and the State focused on gang affiliation as the motive for the murder. The defendant asked the trial court to question the individual members of the venire on whether the fact that the defendant was a member of a street gang would prevent them from giving him a fair trial. The trial court refused the question. On appeal, the defendant argued that the trial court committed reversible error by refusing to question the venire on the subject of gang affiliation. The appellate court reversed and remanded for a new trial. The court noted that the parties had cited no case requiring the trial court to question prospective jurors about biases against gang members. The court observed that in most Illinois cases, the trial court had permitted such questions to be asked. The court noted that gang membership is an area of potential bias due to a widespread prejudice against street gangs. Because the trial court failed to ask any questions concerning this bias, the defendant was deprived of the opportunity to exercise his peremptory challenges in an effective manner. Once the trial court decided to permit evidence of the defendant's gang affiliation, the trial court was under a "clear duty" to insure that the jury selected was free from prejudice against gangs. Jimenez, 284 Ill. App.3d at 912, 220 Ill.Dec. 97, 672 N.E.2d 914. We note that Jimenez relied on a California case for this holding, noting that the question was one of first impression in Illinois. Jimenez, 284 Ill.App.3d at 912, 220 Ill.Dec. 97, 672 N.E.2d 914.
In People v. Pogue, 312 Ill.App.3d 719, 243 Ill.Dec. 926, 724 N.E.2d 525 (1999), the defendant was charged with shooting a member of a rival gang. The appellate court reversed and remanded for a new trial on the basis that the trial court had failed to question individual members of the venire concerning the defendant's right not to testify as required by People v. Zehr, 103 Ill.2d 472, 83 Ill.Dec. 128, 469 N.E.2d 1062 (1984). Because the issue was likely to recur on retrial, the appellate court also addressed the defendant's contention that the trial court erred by refusing to ask prospective jurors whether the defendant's gang affiliation would affect their ability to be fair and impartial. Relying on Jimenez, the appellate court held that the trial court should have questioned the venire concerning gang bias. Specifically, the court noted that, while Jimenez does not impose an affirmative duty on the trial court to make gang bias inquiries sua sponte, "where an appropriate question is tendered prior to voir dire, and the circumstances of the case are such that fundamental fairness requires that the venire be probed on this issue, the refusal to do so constitutes reversible error." Pogue, 312 Ill.App.3d at 727, 243 Ill.Dec. 926, 724 N.E.2d 525.
*361 Defendant also cites People v. Cruz, 164 Ill.App.3d 802, 115 Ill.Dec. 795, 518 N.E.2d 320 (1987). There, the trial court allowed the State to show the jury a documentary video concerning street gangs in an attempt to support its effort to establish a gang-related motive for the shooting. The victim claimed that he had been harassed by members of the defendant's gang to join the gang and that the shooting was part of an attempt to recruit him. The appellate court found the admission of the video to be highly inflammatory and prejudicial. The court noted that in Chicago there was a "`deep, bitter and widespread prejudice against street gangs.'" Cruz, 164 Ill.App.3d at 812, 115 Ill.Dec. 795, 518 N.E.2d 320, quoting People v. Parrott, 40 Ill.App.3d 328, 331, 352 N.E.2d 299 (1976).
Defendant also cites People v. Smith, 141 Ill.2d 40, 58, 152 Ill.Dec. 218, 565 N.E.2d 900 (1990), a capital case involving extensive evidence of gang-related activity. In discussing this evidence and its relevance, this court noted that it has been recognized that, particularly in metropolitan areas, there may be strong prejudice against street gangs.
We note that neither Cruz nor Smith involved any issue concerning voir dire. Regarding Jimenez, the appellate court in Pogue recognized that Jimenez imposed no sua sponte duty on the trial court to question the venire regarding gang bias. Rather, Pogue noted that the thrust of Jimenez was that where gang-bias questions are submitted and "fundamental fairness" so dictates, a trial court is required to question potential jurors on gang bias. Pogue, 312 Ill.App.3d at 727, 243 Ill.Dec. 926, 724 N.E.2d 525. This amounts to no more than saying that a trial court abuses its discretion in refusing to question the venire concerning gang bias in appropriate cases. These cases cannot be said to lead inevitably to the holding of Strain.
This court has previously held that a new requirement mandating certain questions during voir dire did not apply retroactively. In Zehr, this court held that it was error for the trial court to refuse to ask prospective jurors, upon the defendant's request, whether they understand and accept the following concepts: (1) the defendant is presumed innocent until proven guilty; (2) the defendant is not required to offer any evidence in his own behalf; (3) the defendant must be proved guilty beyond a reasonable doubt; and (4) the defendant's failure to testify in his own behalf cannot be held against him. Zehr, 103 Ill.2d at 477, 83 Ill.Dec. 128, 469 N.E.2d 1062. In Zehr, the State argued that because Supreme Court Rule 234 prohibited voir dire questions on matters of law or instructions, the trial court properly refused to ask the defendant's questions. This court rejected that argument, noting that the understanding of the four concepts was essential to the qualification of jurors in a criminal case. If a juror has an objection to any of these basic guarantees, the court opined, an instruction given at the end of the trial will have little curative effect. The court observed that each of the mandated inquiries goes to the heart of a particular bias or prejudice that would deprive a defendant of the right to a fair and impartial jury. The failure to ask such questions thus results in prejudicial error. Zehr, 103 Ill.2d at 477-78, 83 Ill. Dec. 128, 469 N.E.2d 1062.
Despite the importance of the questions mandated by Zehr, this court held in People v. Britz, 112 Ill.2d 314, 318-19, 97 Ill.Dec. 768, 493 N.E.2d 575 (1986), a pre-Teague case, that the holding of Zehr was to be given only prospective effect because it represented a change in Illinois law. In support of this holding, the court cited Rule 234's prohibition of voir dire questions that directly or indirectly *362 concern matters of law or instructions and noted that Zehr represented a departure from that rule. Defendant here attempts to distinguish Britz by noting that while Zehr was contrary to supreme court rules, Strain was in accord with those rules. This claim is inaccurate. As previously noted, the conduct of voir dire has historically been left to the trial court. Strain represented a break from this precedent by removing the trial court's discretion where gang evidence will be integral to a defendant's trial. Rule 431 was adopted by this court to regulate voir dire examination of prospective jurors. That rule gives the trial court the primary discretion of conducting voir dire and for determining the extent and scope thereof. Strain, 194 Ill.2d at 475-76, 252 Ill.Dec. 65, 742 N.E.2d 315. The holding of Strain, removing that discretion when gang evidence is to be integral to the trial, was not consistent with that rule.
In his argument that Strain did not announce a new rule, defendant relies heavily on Strain's recognition of the disfavor in which gangs are held by the general public and its citation of prior cases that had commented on this fact. However, it does not necessarily follow from this that Strain was a mere extension of this prior precedent. And even if Strain is viewed as an extension of prior precedent, this fact alone would not be enough to find that Strain did not announce a new rule. As we noted earlier, "the fact that a court says that its decision is within the `logical compass' of an earlier decision, or indeed that it is `controlled' by a prior decision, is not conclusive for purposes of deciding whether the current decision is a `new rule' under Teague." Butler, 494 U.S. at 415, 110 S.Ct. at 1217, 108 L.Ed.2d at 356. Rather, the key to the determination of whether a new rule was announced is whether courts considering the defendant's claim at the time his or her conviction became final "would have felt compelled by existing precedent to conclude that the rule * * * was required by the Constitution." Saffle v. Parks, 494 U.S. 484, 488, 110 S.Ct. 1257, 1260, 108 L.Ed.2d 415, 424 (1990); People v. Morris, 236 Ill.2d at 360, 338 Ill.Dec. 863, 925 N.E.2d 1069.
Defendant has cited no case predating Strain that came to the conclusion that mandated questioning of the venire was required by the Constitution. The case that comes closest to doing so, Jimenez, relied on a California case for its holding. Jimenez, 284 Ill.App.3d at 912-13, 220 Ill. Dec. 97, 672 N.E.2d 914. The fact is that, prior to Strain, as the State notes, there were very few subjects concerning which trial courts were required to question potential jurors. Some of those subjects included the Zehr factors (Zehr, 103 Ill.2d 472, 83 Ill.Dec. 128, 469 N.E.2d 1062); views concerning the defense of insanity (People v. Stack, 112 Ill.2d 301, 97 Ill.Dec. 676, 493 N.E.2d 339 (1986)); racial bias in certain cases (People v. Hope, 184 Ill.2d 39, 234 Ill.Dec. 379, 702 N.E.2d 1282 (1998)); abortion (People v. Murawski, 2 Ill.2d 143, 117 N.E.2d 88 (1954)); dram shop and temperance (Lavin v. People, 69 Ill. 303 (1873); Schneider v. Kirk, 83 Ill.App.2d 170, 226 N.E.2d 655 (1967)); and life-qualifying questions in capital cases (People v. Buss, 187 Ill.2d 144, 240 Ill.Dec. 520, 718 N.E.2d 1 (1999)). Instead, as we have noted, the scope of voir dire was committed in the vast majority of cases to the sound discretion of the trial court. For these reasons, at the time defendant's conviction became final, no court would have felt compelled by existing precedent to conclude that the rule announced in Strain was required by the Constitution. Thus, the conclusion is inescapable that Strain announced a new rule.
Defendant, however, analogizes Strain to this court's decision in People v. Moore, *363 177 Ill.2d 421, 226 Ill.Dec. 804, 686 N.E.2d 587 (1997). There, the issue was whether the decision in People v. Kilpatrick, 167 Ill.2d 439, 212 Ill.Dec. 660, 657 N.E.2d 1005 (1995), applied retroactively to the defendant's case. Kilpatrick held that section 5-8-1(c) of the Unified Code of Corrections (Code) prohibits a trial court from imposing a longer sentence on reconsideration, even if the aggregate period of imprisonment remains the same. Kilpatrick, 167 Ill.2d at 446-47, 212 Ill.Dec. 660, 657 N.E.2d 1005. The defendant in Moore had been given consecutive sentences. The appellate court vacated the sentences as improper and remanded for resentencing. The trial court resentenced the defendant to concurrent terms of imprisonment that equaled the combined length of his prior consecutive sentences. The defendant filed a postconviction petition challenging the sentences. This court held that Kilpatrick did not announce a new rule and was therefore applicable to cases on collateral review. In doing so, the court noted that a case does not announce a new rule if "`"`it has simply applied a well-established constitutional principle to govern a case which is closely analogous to those which have been previously considered in the prior case law.'" [Citations.]'" Moore, 177 Ill.2d at 431, 226 Ill.Dec. 804, 686 N.E.2d 587, quoting Penry v. Lynaugh, 492 U.S. 302, 314, 109 S.Ct. 2934, 2944, 106 L.Ed.2d 256, 274 (1989). Moore concluded that a decision does not announce a new rule if it merely applies existing precedent to an analogous set of facts. Moore, 177 Ill.2d at 431, 226 Ill. Dec. 804, 686 N.E.2d 587. The court noted that Kilpatrick had relied on the Supreme Court's decision in North Carolina v. Pearce, 395 U.S. 711, 89 S.Ct. 2072, 23 L.Ed.2d 656 (1969), which stated that due process may prohibit a judge from imposing a more severe sentence where a defendant has been convicted after a retrial in the absence of objective evidence of identifiable misconduct occurring after the time of the original sentencing. Section 5-8-1 of the Code was consistent with Pearce. Moore noted that this court followed Pearce in People v. Baze, 43 Ill.2d 298, 253 N.E.2d 392 (1969). Moore noted further that the legislature had incorporated the Pearce and Baze decisions into section 5-5-4 of the Code (applicable in Moore), which prohibits a more severe sentence from being imposed on resentencing unless it is based on a defendant's conduct occurring subsequent to the original sentencing. Thus, Moore concluded that this had been the rule in Illinois for over 20 years. Kilpatrick merely applied this precedent to the facts of that case. As such, the rule enunciated in Kilpatrick was predicated on well-settled principles of law. Moore, 177 Ill.2d at 432-33, 226 Ill.Dec. 804, 686 N.E.2d 587.
Moore is distinguishable from Strain. The holding of Kilpatrick was a mere extension of existing law. It was already well settled in Illinois that due process prohibited a judge from increasing a sentence upon resentencing unless justified by a defendant's conduct occurring after the original sentencing. In addition, the Illinois legislature had enacted section 5-5-4 of the Code, incorporating Pearce and Baze. Kilpatrick merely applied the then-existing precedent and statutory law to the set of facts in that case. Strain, on the other hand, was a clear break from precedent. Nothing in the case law foretold the holding in Strain. Comments made by the dissenting justices in Strain confirm this fact. Justice Heiple noted in his dissent that this court had consistently held that potential jurors may not be asked about anticipated responses to specific items of evidence. Calling Strain's holding "revolutionary," he worried that the court was setting a troubling precedent *364 which would result in future litigants requesting voir dire on any potential bias merely by showing that the evidence on a particular subject will play a major role in the trial and that segments of our society view the subject with considerable disfavor. He expressed concern that such mandated questioning of the venire would be counterproductive and might corrupt a jury by prematurely exposing potential jurors to evidence. Strain, 194 Ill.2d at 483-84, 252 Ill.Dec. 65, 742 N.E.2d 315 (Heiple, J., dissenting, joined by Bilandic, J.).
Defendant, however, maintains that there is a difference between a new rule and a "change" in the law and that Strain represents the latter, thus allowing him to avoid the bar of res judicata. In making this argument, defendant relies primarily on Moore and Kilpatrick. Although he agrees that Kilpatrick applied existing precedent and statutory law to the facts of that case, he argues that it nonetheless changed the law, allowing for retroactive application. Defendant points to the fact that the trial court and the appellate court in Kilpatrick had rejected Kilpatrick's claim. Defendant also notes that, prior to this court's Kilpatrick decision, the appellate court in People v. Todd, 263 Ill.App.3d 435, 200 Ill.Dec. 923, 636 N.E.2d 114 (1994), reached a contrary conclusion to that reached by this court in Kilpatrick. Defendant further asserts that because no lower court would reach this contrary conclusion subsequent to this court's Kilpatrick decision, Kilpatrick's "clarification of what the law required represented a change from the previous state of affairs."
We disagree with defendant's argument. This court in Moore stated that the appellate court's decision in Todd was not a reasonable application of existing precedent and that it conflicted with Pearce and with the plain language of sections 5-8-1 and 5-5-4 of the Code. Moore, 177 Ill.2d at 435-36, 226 Ill.Dec. 804, 686 N.E.2d 587. Further, that post-Kilpatrick decisions of the appellate court would not reach the contrary position of Todd merely reflects the fact that Kilpatrick, as a decision of this court, is binding on all lower courts. See People v. Artis, 232 Ill.2d 156, 164, 327 Ill.Dec. 556, 902 N.E.2d 677 (2009).
We therefore conclude that this court's decision in Strain announced a new constitutional rule of criminal procedure. Under Teague, a new rule may not be applied retroactively except in two limited circumstances: (1) if the new rule places certain kinds of primary, private individual conduct beyond the power of the criminal-law-making authority to proscribe; or (2) if the rule is a watershed rule of criminal procedure, requiring the observance of those procedures that are implicit in the concept of ordered liberty. Teague, 489 U.S. at 311, 313, 109 S.Ct. at 1076, 1077, 103 L.Ed.2d at 356, 358. The first exception is obviously not applicable. As to the second exception, we note the Supreme Court stated in Teague that it should be limited to those new procedures without which the likelihood of an accurate conviction is seriously diminished. Teague, 489 U.S. at 313, 109 S.Ct. at 1077, 103 L.Ed.2d at 358. At oral argument in this case, counsel for defendant candidly acknowledged that neither exception applies to Strain and we agree. Thus, the holding of Strain is not retroactive and does not apply to cases on collateral review.
Because Strain announced a new rule and is not to be applied retroactively to collateral proceedings, defendant's postconviction petition is barred by res judicata. A postconviction proceeding permits review of constitutional issues that were not and could not have been adjudicated on direct appeal. People v. Pitsonbarger, 205 Ill.2d 444, 455-56, 275 Ill.Dec. *365 838, 793 N.E.2d 609 (2002). Thus, issues that were decided on direct appeal are barred from consideration by the doctrine of res judicata. People v. Towns, 182 Ill.2d 491, 502, 231 Ill.Dec. 557, 696 N.E.2d 1128 (1998). Here, absent the applicability of Strain, the claim raised by defendant in his postconviction petition is the same one raised and decided in his direct appeal. Thus, res judicata bars defendant's petition. Due to our disposition of this case, we need not address the remainder of defendant's arguments.

CONCLUSION
For the reasons stated, we hold that this court's decision in Strain announced a new constitutional rule of criminal procedure and that neither of the Teague exceptions to nonretroactivity apply. Therefore, the holding of Strain does not apply retroactively to cases on collateral review. Defendant's postconviction petition is thus barred by res judicata. In addition, we overrule the appellate court's decision in People v. Gardner, 331 Ill.App.3d 358, 264 Ill.Dec. 622, 771 N.E.2d 26 (2002), to the extent that case is inconsistent with our holding today.
The judgment of the appellate court is affirmed.
Affirmed.
Chief Justice FITZGERALD and Justices THOMAS, KILBRIDE, and KARMEIER concurred in the judgment and opinion.
Justice FREEMAN specially concurred, with opinion, joined by Justice BURKE.
Justice FREEMAN, specially concurring:
In its opinion, the majority concludes that our prior decision in People v. Strain, 194 Ill.2d 467, 252 Ill.Dec. 65, 742 N.E.2d 315 (2000), announced a new constitutional rule of criminal procedure and, therefore, may not be applied retroactively. Although I have no quarrel with the majority's holding on this issue, I believe my colleagues have erred by not first addressing a threshold, procedural question: whether Sanders' postconviction petition was timely filed. The appellate court, using an incorrect standard, determined that Sanders' petition was untimely. Normally, such a holding ends the case, as the Post-Conviction Hearing Act (Act) (725 ILCS 5/122-1 et seq. (West 2000)) forbids any proceedings filed beyond the time periods it sets forth. However, the appellate court nevertheless reached the merits of the substantive issue. In their opinion, my colleagues do not address this threshold procedural issue, analyzing only Sanders' substantive claim. By doing so, this court creates confusion for the bench and bar in several respects: not only does the court call into question the proper analytical sequence used to review such claims, the court also leaves standing a published appellate court opinion that applies an incorrect standard to assess the timeliness of Sanders' petition. Because today's opinion leaves these matters unaddressed, I am compelled to write separately.
Section 122-1(c) of the Act (725 ILCS 5/122-1(c) (West 2000)) sets forth the specific time period within which a petitioner shall initiate a postconviction proceeding. At the time defendant filed his petition, the Act provided:
"No proceedings under this Article shall be commenced more than 6 months after the denial of a petition for leave to appeal or the date for filing such a petition if none is filed or more than 45 days after the defendant files his or her brief in the appeal of the sentence before the Illinois Supreme Court (or more than 45 days after the deadline for the filing of the defendant's brief with the Illinois *366 Supreme Court if no brief is filed) or 3 years from the date of conviction, whichever is sooner, unless the petitioner alleges facts showing that the delay was not due to his or her culpable negligence."
Thus, the General Assembly has not only established a clear framework within the Act for assessing the timeliness of a postconviction petition, but also has specified the test to be used to excuse a petitioner's noncompliance with these requirements: a petition filed outside the delineated time period is considered untimely unless "the petitioner alleges facts showing that the delay was not due to his or her culpable negligence." 725 ILCS 5/122-1(c) (West 2000); see also People v. Rissley, 206 Ill.2d 403, 420, 276 Ill.Dec. 821, 795 N.E.2d 174 (2003); People v. Pitsonbarger, 205 Ill.2d 444, 456, 275 Ill.Dec. 838, 793 N.E.2d 609 (2002).
The appellate court, despite acknowledging that the clear language of section 122-1(c) mandates the use of the culpable negligence standard to assess the timeliness of Sanders' initial postconviction petition, instead applied the cause-and-prejudice standard set forth in Pitsonbarger which is used to determine the timeliness of successive postconviction petitions.[1] In applying this heightened standard, the appellate panel reasoned that where a "defendant seeks in the first instance to file an untimely postconviction petition because of a change in the law that occurred after the filing deadline had passed," this is "analogous to the situation in which a defendant has already filed an unsuccessful postconviction petition, but seeks to file a successive postconviction petition because of a change in the law that occurred after the rejection of his first petition." 393 Ill.App.3d at 171-72, 331 Ill.Dec. 866, 911 N.E.2d 1096. This reasoning is without support and in error.
As this is the first postconviction petition filed by Sanders, both the Act and our case law make it clear that challenges to timeliness must be evaluated under the culpable negligence standard and not the more stringent cause-and-prejudice test. The appellate court ignored the distinction between initial and successive postconviction petitions, which mandates that each type of petition be evaluated under different analytical frameworks. In addition, the appellate panel's holding runs counter not only to our long-held view that the Act in general must be "`liberally construed to afford a convicted person an opportunity to present questions of deprivation of constitutional rights'" (Rissley, 206 Ill.2d at 421, 276 Ill.Dec. 821, 795 N.E.2d 174, quoting People v. Correa, 108 Ill.2d 541, 546, 92 Ill.Dec. 496, 485 N.E.2d 307 (1985)), but also that the specific exception contained in section 122-1(c) allowing a petitioner to file an otherwise-untimely petition operates as a "`special "safety valve"' in the Act." Rissley, 206 Ill.2d at 420, 276 Ill.Dec. 821, 795 N.E.2d 174, quoting People v. Bates, 124 Ill.2d 81, 88, 124 Ill.Dec. 407, 529 N.E.2d 227 (1988).
In light of the above, I cannot understand why my colleagues do not address this threshold issue and clarify that the appellate court used the wrong standard. The majority's silence on this issue is even more disturbing in light of the concession made by the State in its brief to this court *367 that the appellate court's holding with respect to timeliness does "not find support in the Act," and that the applicable timeliness standard in this appeal is one of culpable negligence. Further, during oral argument, several members of this court repeatedly questioned the parties concerning the timeliness issue and the manner in which it was handled by the appellate panel. Counsel for both the State and petitioner agreed that the culpable negligence standard applies in this case, and that the appellate court erred in employing the cause-and-prejudice test.
It is my view that when the correct standard is applied to Sanders' postconviction petition, the delay in filing was not due to his culpable negligence. This court has defined culpable negligence as "`something greater than ordinary negligence'" and "`akin to recklessness.'" Rissley, 206 Ill.2d at 420, 276 Ill.Dec. 821, 795 N.E.2d 174, quoting People v. Boclair, 202 Ill.2d 89, 108, 273 Ill.Dec. 560, 789 N.E.2d 734 (2002). Sanders had argued on direct appeal that the circuit court's voir dire was deficient and denied him his constitutional right to a fair and impartial jury by failing to question the jury regarding potential gang bias. See 393 Ill.App.3d at 160, 331 Ill.Dec. 866, 911 N.E.2d 1096. Because this argument was rejected on direct appeal, Sanders was barred by res judicata from re-raising it in a postconviction petition. People v. Whitehead, 169 Ill.2d 355, 371, 215 Ill.Dec. 164, 662 N.E.2d 1304 (1996). As my colleagues hold today, this court's decision in Strain announced a new constitutional rule of criminal procedure which impacted defendant's ability to once again raise this issue in postconviction proceedings. Thus, it was only after Strain was decided that Sanders was able to resurrect the issue of inadequate voir dire without being barred by res judicata.
Here, Sanders' petition for leave to appeal to this court with respect to his direct appeal was denied on April 2, 1997 (People v. Sanders, 172 Ill.2d 563, 223 Ill.Dec. 199, 679 N.E.2d 384 (1997)), and the six-month statutory postconviction period following that date expired on October 2, 1997. Since he was sentenced on May 4, 1994, the three-year period following that date expired on May 4, 1997. Therefore, under the applicable version of section 122-1(c), Sanders' postconviction petition was due on May 4, 1997, the earlier of the two dates. We decided Strain on November 16, 2000, and Sanders filed the instant postconviction petition exactly one year later, on November 16, 2001. Under these facts, I conclude that Sanders' delay in filing was not due to his culpable negligence, as he reasonably pursued the voir dire issue again after the new rule in Strain was announced. I note that the Act does not specify an additional time period, after the expiration of the normal filing period, during which a petitioner may be found culpably negligent in filing a postconviction petition based upon a change in the law. In addition, our case law has not squarely addressed this issue. We have, however, traditionally relied upon federal case law in interpreting and applying the Act. People v. Hodges, 234 Ill.2d 1, 12, 332 Ill.Dec. 318, 912 N.E.2d 1204 (2009). In Dodd v. United States, 545 U.S. 353, 357, 125 S.Ct. 2478, 2481-82, 162 L.Ed.2d 343, 349 (2005), the Supreme Court held that 28 U.S.C. 2255, ¶ 6(3) establishes that a federal prisoner may file a motion to vacate, set aside or correct his sentence within one year from the date on which the right he asserts was newly recognized by the Court. Relying upon Dodd, there is no question that, at a minimum, Sanders' petition filed one year after Strain was decided was not untimely.
Accordingly, after having survived this threshold procedural inquiry, it only then *368 becomes appropriate to examine the substantive issue of whether Strain applied retroactively to Sanders' case. As stated, I am in agreement with my colleagues' holding that Strain represents a new constitutional rule of criminal procedure that is not to be retroactively applied.
Justice BURKE joins in this special concurrence.
NOTES
[1]  Section 122-1(f) was added to the Act in 2004, and codified the holding of Pitsonbarger. By its plain language, section 122-1(f) applies only to successive postconviction petitions, and provides that a successive petition may be filed only upon leave of court where "a petitioner demonstrates cause for his or her failure to bring the claim in his or her initial post-conviction proceedings and prejudice results from that failure." 725 ILCS 5/122-1(f) (West 2004).
