BORDEN, J.
The principal issue in this certified appeal is whether the Appellate Court properly concluded that the defendant was entitled to a new trial because the trial court had failed to comply adequately with Practice Book § 961 (3)1 and, accordingly, that the [635]*635defendant’s waiver of counsel was invalid. The defendant, Scott Brian Wolff, was convicted after a jury trial of two counts of assault of a peace officer in violation of General Statutes § 53a-167c (a) (l),2 and one count of breach of the peace in violation of General Statutes § 53a-181 (a) (5).3 He appealed from the judgment of conviction to the Appellate Court, which reversed the judgment of the trial court and remanded the case for a new trial. State v. Wolff, 37 Conn. App. 500, 657 A.2d 650 (1995). We granted the state’s petition for certification to appeal, limited to the question of whether the Appellate Court correctly concluded that the trial court had failed to conduct an adequate canvass before permitting the defendant to proceed to trial without counsel.4 Thereafter, the defendant presented for review, pursuant to Practice Book § 4140,5 the following alter[636]*636nate grounds for affirming the judgment of the Appellate Court: (1) the trial court improperly permitted the defendant to represent himself without ordering, sua sponte, an examination to determine whether he was competent to do so; and (2) the trial court improperly instructed the jury regarding the element of intent required for conviction of the breach of the peace charge. We reverse the judgment of the Appellate Court with respect to the validity of the defendant’s waiver, and affirm its judgment with respect to the jury instruction regarding the breach of the peace charge.
The jury could reasonably have found the following facts. On May 26, 1992, while Hartford police officer Stephen Miele was on foot patrol near the train station in downtown Hartford, he stopped an individual who fit the description of a robbery suspect being sought by the police. Because the suspect was uncooperative, Miele requested assistance and was soon joined by police officer Laura Buyak. While Miele was in the process of arresting the robbery suspect, his attention was diverted to the defendant, who was standing at the top of the train station stairway shouting something approximating the following: “Fuck you, you motherfucking cops. You’re all cocksuckers. You’re all out to get me.” The defendant was also screaming such things as “[f]ucking cops,” causing other people to stop and see what was occurring. Dennis Connolly, who was working in a store across the street from the train station, heard a commotion outside and, when he went to investigate, saw the defendant standing at the top of the stairs, shouting at Miele and Buyak, using the language previously described. Connolly was annoyed and alarmed by the defendant’s language.
After placing the robbery suspect in Buyak’s patrol car, Miele and Buyak approached the defendant and attempted to calm him down. Because Miele thought that the defendant might have been a friend of the [637]*637man arrested, he approached the defendant in order to explain why the other man had been arrested. As Miele was trying to speak to the defendant and calm him down, the defendant swung at Miele, striking him in the chest. When Buyak attempted to assist Miele, the defendant became even more agitated and began swinging his arms and fists at both officers, who tried to defend themselves and to restrain the defendant. During the ensuing struggle, the defendant and the two officers fell down several steps of the stairway, resulting in loss of consciousness to Buyak, and an injury to Miele’s foot. When Buyak regained consciousness, the defendant was on the ground, still struggling with Miele. Buyak then picked up Miele’s baton and struck the defendant in the legs until he was sufficiently subdued to permit the officers to handcuff him. The defendant was then taken to the police station in a patrol wagon, and both officers were treated at a hospital for their injuries.
At the defendant’s arraignment on May 27, 1992, the court, Pellegrino, J., proposed to appoint the public defender to represent the defendant. The defendant informed the court, however, that he intended to represent himself. At his next two pretrial appearances, on June 10,1992,6 and June 24,1992, before Pellegrino, J., and Kocay, J., respectively, the defendant appeared without counsel and reiterated his desire to proceed pro se. At the defendant’s next appearance, on July 7, 1992, the court, Kocay, J., informed the defendant that, despite the defendant’s objections, it was going to appoint the public defender to represent him. Judge Kocay told the defendant: “[i]f you don’t want the public defender then he can sit behind you when the case comes up. But I’m going to continue this so they can [638]*638discuss it with you to determine if a public defender is appropriate. ... At this stage I’m going to appoint the public defender to assist you. You can refuse his services if you wish but he’s going to be appointed notwithstanding.” (Emphasis added.) Although the defendant had initially objected to the appointment of the public defender stating, “No, that’s my choice,” by the end of the July 7 hearing he had learned that the public defender might be able to help him get access to his supplemental security income (SSI) checks, at which point he inquired when he would be able to talk to the public defender.
On July 21,1992, assistant public defender Ross Delaney appeared before Judge Kocay on behalf of the defendant and requested a continuance to confer with the defendant, which the court permitted. The following day, Delaney again appeared for the defendant and argued a motion for bond reduction before Judge Kocay. When asked if he was the defendant’s attorney of record, Delaney responded that he was. Delaney also stated, however, that he was acting as standby counsel. During the bond reduction hearing, the state recounted the facts of the case, maintaining that the defendant had been screaming and swearing at police officers, and then had engaged in a fight with them. Delaney then said that he had discussed the case with the defendant, who had presented a different version of the incident.7
[639]*639At the next pretrial hearing, on September 15, 1992, Delaney again appeared for the defendant and addressed the court, O’Keefe, J., on the defendant’s behalf. The defendant renewed his objection to being represented by Delaney, insisting that he had been pro se all along, but also stating that when Judge Kocay had appointed Delaney, he had “[gone] along with it.” The court then allowed the defendant individually to present argument about his bond.8
At the defendant’s next appearance, on November 18, 1992, the court, Espinosa, J., informed the defendant that his case was ready for trial and asked the defendant if he had counsel. After the defendant told Judge Espinosa that he intended to represent himself, she questioned him in order to determine whether to accept his waiver of counsel.9 Thereafter, the trial court [640]*640told the defendant that he would be permitted to represent himself at trial, with Delaney acting as standby counsel.
[641]*641After a recess, the trial court reconvened. Upon reconvening, further colloquies and proceedings took [642]*642place among the trial court, the state, the defendant and his standby counsel. The court explained the process of [643]*643jury voir dire to the defendant, and he indicated that he understood the court’s explanation. The court then [644]*644explained that it would be in the defendant’s interest to have the two sets of charges severed so as to avoid [645]*645undue prejudice to him. See footnotes 7 and 10. In this connection, Delaney also indicated that he had advised [646]*646the defendant of the “legal ramifications” of having the cases tried separately or together, and that “it was [the [647]*647defendant’s] decision to state whatever he [wanted].” When the state objected to a severance, the state, at the court’s request, described the facts of the two sets of charges, and the defendant elected to have them tried together.10 The court then explained to the defend[648]*648ant that the state proposed to file a substitute information that would change the charge in the December 20, 1991 incident from a misdemeanor to a felony, that the charge of “assault on a peace officer” is a class C felony carrying a minimum mandatory sentence of one year, and a maximum sentence of ten years and a $5000 fine, and that the charge of “[b]reach of the peace” carries a maximum penalty of six months and a $1000 fíne. The court further explained that, because of the defendant’s decision to have the cases tried together, the state had to file a substitute information, and stated: “So if that’s what you want to do you’ll understand the consequences of that then I will recess and give the state an opportunity to [file a substitute information] because what’s going to happen is you have to plead again. You have to plead not guilty to the new charges, and ask [649]*649for a jury trial.” Before the court recessed, however, the defendant requested copies of the police reports on the two cases. Delaney indicated that he had those copies, and would give them to the defendant.
After the luncheon recess, the state handed copies of its two long form substitute informations to the defendant, and the defendant was put to plea on the charges involved in this appeal. The clerk read the long form information involved in this case, which spelled out the statutory elements of the charges of assault of a peace officer and breach of the peace.11 The court then, at the state’s request, readvised the defendant of the penalties for assault of a peace officer and breach of the peace, and the court again asked the defendant whether he had “ever represented [himjself before in a case,” to which the defendant responded, “No.” Thereafter, the parties selected a jury, and the trial proceeded.
At trial, the defendant represented himself, with Delaney acting as standby counsel. The jury found the [650]*650defendant guilty of all three charges and, after the court ordered the defendant examined pursuant to General Statutes § 17a-566,12 the court rendered judgment of conviction in accordance with the verdict.
The defendant appealed to the Appellate Court. In the Appellate Court, the defendant claimed that “the [651]*651trial court improperly (1) permitted him to represent himself without a determination that he was competent, (2) permitted him to proceed without an adequate waiver of counsel, (3) determined that sufficient evidence was introduced at trial from which a rational trier of fact could find the defendant guilty of breach of the peace, and (4) instructed the jury on the intent element of breach of the peace.” State v. Wolff, supra, 37 Conn. App. 501-502. The Appellate Court rejected the defendant’s third claim, and did not reach the first and fourth claims. With respect to the defendant’s waiver of counsel claim, the court concluded that, when the trial court had canvassed the defendant in order to determine whether to accept his waiver, it had failed to comply with Practice Book § 961 (3), which requires that, in order for a defendant to waive his right to counsel and represent himself, the court must be satisfied that he “[cjomprehends the nature of the charges and proceedings, the range of permissible punishments, and any additional facts essential to a broad understanding of the case.” See footnote 1.
The Appellate Court considered the defendant’s claim under § 961 (3) pursuant to the plain error doctrine; [652]*652see Practice Book § 4185;13 concluding that, “[although the defendant did not properly preserve this claim of error for appeal, noncompliance with a mandatoiy rule of practice constitutes plain error. ” State v. Wolff, supra, 37 Conn. App. 506. The court also noted that “[t]his claim is also reviewable under State v. Golding, 213 Conn. 233, 567 A.2d 823 (1989). Because we conclude that the trial court’s actions constituted plain error, we need not undertake a Golding analysis.” State v. Wolff, supra, 506 n.6.
The Appellate Court concluded that the trial court’s canvass of the defendant was flawed because the court had not advised him of the specific statutory elements of the crimes charged. Id., 506. “In an attempt to comply with § 961 (3), the court did advise the defendant of the penalties that he faced in light of the state’s charges, but it did not advise him of the elements of those crimes so as to inform him adequately of the nature of the charges against him.” Id. In response to the state’s argument that the trial court was entitled to presume that the defendant’s counsel had explained to him the nature of the offenses in sufficient detail, the Appellate Court read the record to disclose that “the defendant proceeded without the assistance of counsel from the inception of his court appearances. We cannot presume, therefore, that the defendant’s attorney had explained the nature of the offenses to the defendant.” Id., 507. The court concluded, accordingly, that there had been “ ‘substantial defective compliance’ ” with § 961 (3). Id. Accordingly, the Appellate Court reversed the judgment of conviction and remanded the case for a new trial. Id., 509. This certified appeal by the state followed.
[653]*653I
We first address the certified issue, namely, whether the Appellate Court properly concluded that the defendant’s waiver of counsel and election to proceed pro se was invalid. The state claims that the Appellate Court improperly concluded that the trial court did not comply adequately with the requirements of § 961 (3). The state takes issue with the Appellate Court’s decision on two grounds. First, the state argues that the Appellate Court improperly construed the provision in § 961 (3) that the defendant be advised of the nature of the charges against him to require the trial court to advise the defendant of the specific elements of the crimes with which he was being charged. Second, the state contends that the Appellate Court improperly concluded that the trial court could not presume that the defendant’s counsel had advised him of the nature of the charges. The state further argues that all of the remaining requirements of § 961 had been satisfied. We agree with the state.
A
We first consider the Appellate Court’s reliance, under the plain error doctrine, on what it held to be the trial court’s noncompliance with a mandatory rule of practice, namely, § 961 (3). To the extent that the Appellate Court based its conclusion on the effect of § 961 (3) solely as a mandatory rule of practice, apart from its constitutional underpinnings,14 that basis was flawed because § 961 and the constitutional requirements for permitting a defendant to waive his right to [654]*654counsel and, thereby, assert his constitutional right to represent himself, are synonymous.
The right to counsel and the right to self-representation “present mutually exclusive alternatives. A criminal defendant has a constitutionally protected interest in each, but since the two rights cannot be exercised simultaneously, a defendant must choose between them. When the right to have competent counsel ceases as the result of a sufficient waiver, the right of self-representation begins. . . . Put another way, a defendant properly exercises his right to self-representation by knowingly and intelligently waiving his right to representation by counsel.” (Citation omitted; internal quotation marks omitted.) State v. Day, 233 Conn. 813, 821, 661 A.2d 539 (1995).
Section 961 “was adopted in order to implement the right of a defendant in a criminal case to act as his own attorney State v. Gethers, 193 Conn. 526, 532, 480 A.2d 435 (1984) (Gethers I). Before a trial court may accept a defendant’s waiver of counsel, it must conduct an inquiry in accordance with § 961, in order to satisfy itself that the defendant’s decision to waive counsel is knowingly and intelligently made. State v. Day, supra, 233 Conn. 822. Because the § 961 inquiry simultaneously triggers the constitutional right of a defendant to represent himself and enables the waiver of the constitutional right of a defendant to counsel, the provisions of § 961 cannot be construed to require anything more than is constitutionally mandated. Id.; State v. Townsend, 211 Conn. 215, 220, 558 A.2d 669 (1989); Gethers I, supra, 534.
“[A] defendant need not himself have the skill and experience of a lawyer in order competently and intelligently to choose self-representation .... Faretta v. California, [422 U.S. 806, 835, 95 S. Ct. 2525, 45 L. Ed. 2d 562 (1975)]. Rather, a record that affirmatively shows [655]*655that [he] was literate, competent, and understanding, and that he was voluntarily exercising his informed free will sufficiently supports a waiver. Id.; Gethers I, supra, [193 Conn.] 536.” (Internal quotation marks omitted.) State v. Day, supra, 233 Conn. 827-28. The nature of the inquiry that must be conducted to substantiate an effective waiver has been explicitly articulated in decisions by various federal courts of appeals. See, e.g., United States v. Cash, 47 F.3d 1083, 1088 (11th Cir. 1995) (court must inform defendant of charges, included offenses and possible range of punishment); United States v. Hurtado, 47 F.3d 577, 583 (2d Cir. 1995) (factors determining valid waiver include whether defendant understood that he had choice between proceeding pro se and with assigned counsel, understood advantages of having trained counsel, and had capacity to make intelligent choice); United States v. Van Krieken, 39 F.3d 227, 229 (9th Cir. 1994) (defendant must be aware of nature of charges against him, possible penalties and disadvantages of self-representation); Government of Virgin Islands v. James, 934 F.2d 468, 471 (3d Cir. 1991) (waiver must be made with apprehension of nature of charges, statutory offenses included within them, range of allowable punishments thereunder, possible defenses to charges, circumstances in mitigation thereof, and all other facts essential to broad understanding of whole matter); United States v. Silkwood, 893 F.2d 245, 249 (10th Cir. 1989) (same); United States v. McDowell, 814 F.2d 245, 251 (6th Cir. 1987) (“model inquiry” includes questioning about defendant’s legal background, knowledge of crimes charged, possible punishments, familiarity with Federal Rules of Evidence and Criminal Procedure, procedure for testifying, and advice that defendant would be better served by representation by trained attorney).
None of these authorities, however, stands for the proposition that a defendant must be specifically [656]*656informed of the particular elements of the crimes charged before being permitted to waive counsel and proceed pro se.15 In fact, the Court of Appeals for the Ninth Circuit has stated that “perfect comprehension of each element of a criminal charge does not appear to be necessary to a finding of a knowing and intelligent waiver.” United States v. Robinson, 913 F.2d 712, 715 (9th Cir. 1990). A discussion of the elements of the charged crimes would be helpful, and may be one of the factors involved in the ultimate determination of whether the defendant understands the nature of the charges against him. A description of the elements of the crime is not, however, a sine qua non of the defendant’s constitutional rights in this context. Indeed, in our cases we have approved of a defendant’s assertion of the right to proceed pro se where the record did not affirmatively disclose that the trial court explained the specific elements of the crimes charged to the defendant as long as the defendant understood the nature of the crimes charged. See State v. Day, supra, 233 Conn. 829 (defendant aware that he was charged with capital felony and multiple counts of murder); State v. Town[657]*657send,, supra, 211 Conn. 222 (defendant aware that he was charged with murder); State v. Gethers, 197 Conn. 369, 371 n.2, 497 A.2d 408 (1985) (while informing defendant of gravity of crime charged, court advised defendant that he was charged with tampering with witness); Gethers I, supra, 193 Conn. 537 (defendant stated that he was aware that he was charged with two counts of robbery). In each of those cases, we concluded that the defendant had validly waived his right to counsel, although none of those decisions indicated that the defendant had been expressly apprised of the elements of the crimes charged.
Applying the appropriate constitutional standard to this record, we conclude that the defendant’s waiver of his right to counsel and assertion of his right to represent himself were valid insofar as he comprehended “the nature of the charges and proceedings” against him. Practice Book § 961 (3). The defendant knew that he was charged with two counts of assault of a peace officer, and with one count of breach of the peace. He knew in detail the facts claimed by the state to constitute his guilt of those charges, through discussions with his counsel, through statements of those facts on the record in his presence, and through the police reports that he had in his possession. Furthermore, shortly after the court accepted his waiver of counsel and his assertion of his right of self-representation, but before any further proceedings had begun, the state handed him the substitute information, the clerk read it to him, and he pleaded not guilty and elected to be tried by a jury. That information contained the essential elements of the crimes charged. Neither the defendant nor his standby counsel, however, took any action to indicate that this additional specific information created any confusion in his mind regarding the nature of the charges.
[658]*658B
We also agree with the state that this record is sufficient to support the presumption that the defendant’s counsel, Delaney, had explained to him the nature of the offenses in sufficient detail to permit the trial court to conclude that § 961 (3) had been satisfied. Gethers I, supra, 193 Conn. 537. Contrary to the assertion of the Appellate Court that the defendant had proceeded pro se from the inception of his court appearances, the defendant was represented by Delaney from July 7, 1992, to November 18,1992, when the defendant waived his right to counsel and proceeded to trial pro se. During that time, there were at least three pretrial hearings at which Delaney appeared on behalf of the defendant. At the July 21, 1992 hearing, Delaney appeared for the defendant and requested that the case be continued so that he could confer with his client. After having had the opportunity to speak with the defendant, Delaney again appeared for the defendant on July 22. Although Delaney described himself both as the defendant’s counsel of record and as his standby counsel, Delaney argued a motion for bond reduction on his behalf. During that hearing, the assistant bail commissioner indicated that the defendant was charged with assault on a police officer. The assistant state’s attorney also stated that the defendant had been publicly screaming and swearing at police officers and had fought with them, resulting in one officer being knocked unconscious. When the court asked Delaney if he would like to speak with the defendant about those issues, Delaney responded, “I’ve already spoken to him, Your Honor. He differs from what they said. He claims they came up and said a few things, he mouthed off, he wasn’t mouthing off at them, he was talking to somebody else. He said they came over and got into his face and things started.” Thus, the record affirmatively discloses that Delaney discussed the facts of the case with the defend[659]*659ant. It is a fair inference from this record that, in representing the defendant in those pretrial hearings and in discussing those facts with him, Delaney also discussed with the defendant the legal significance of those facts. Accordingly, this record supports the presumption that Delaney sufficiently explained the nature of the charges to the defendant.
C
Finally, we agree with the state that this record also discloses that the remaining requirements of § 961 were complied with.16 It is evident from the waiver of counsel canvass; see footnote 9; that the trial court informed the defendant that he had a right to be represented by an attorney, who would act as either full counsel or standby counsel, inquired about the defendant’s social, emotional and educational background, as well as his knowledge of trials, and discussed with the defendant his understanding of the consequences of representing himself and the possible punishments he faced if convicted. The trial court, therefore, properly concluded that the defendant had knowingly and intelligently waived his right to counsel.
Moreover, “the court should ascertain, through an appropriate inquiry, that the defendant possesses the intelligence and capacity to make the choice and to appreciate the consequences of his decision to represent himself. . . . Some of the factors bearing on the defendant’s capacity include age, education, mental health, prior experience with criminal trials and consul[660]*660tation with counsel prior to proceeding pro se, although none of these inquiries is a constitutional necessity.” (Citations omitted.) State v. Townsend, supra, 211 Conn. 221.
The waiver of counsel canvass here reveals that the defendant: (1) had completed two and one-half years of college; (2) had a history of emotional problems but did not currently require treatment or medication; (3) had prior experience as a defendant in a criminal trial; (4) had consulted with counsel prior to proceeding pro se; and (5) had standby counsel available to assist him throughout the entire trial. The trial court’s inquiry pursuant to § 961 supports a conclusion that the defendant was competent to waive his right to counsel.
II
We now turn to the first of the defendant’s alternate grounds for affirmance. The defendant claims that the trial court improperly permitted him to represent himself without ordering, sua sponte, a competency examination,17 pursuant to General Statutes § 54-56d (d).18 The [661]*661defendant concedes that every criminal defendant is presumed to be competent. General Statutes § 54-56d (b). The defendant also concedes that the state, he and Delaney, acting as his appointed counsel or his standby counsel, each failed to move for such an examination. General Statutes § 54-56d (c). The defendant argues, however, that the circumstances of this case, in which the trial court was faced with a defendant who had a [662]*662history of mental illness and was charged with crimes involving bizarre and irrational behavior, required that the trial court order, suasponte, a competency examination before it permitted him to proceed pro se. The defendant further argues that, even if the trial court properly concluded, prior to the commencement of the trial, that he was competent, his behavior during the course of the trial, which eventually led the court to order a postverdict examination of him pursuant to § 17a-566, should have alerted the trial court that a § 54-56d (d) competency examination was required. The defendant asserts that, although he failed to raise these claims at trial, he is entitled to prevail under the doctrine of State v. Golding, supra, 213 Conn. 239-40.19 We conclude that he may not prevail because his claim fails to meet the third prong of Golding.
We agree with the defendant that the record is adequate to review his claim and that, because “[t]he conviction of an accused person who is not legally competent . . . violates the due process of law guaranteed by the state and federal constitutions”; State v. Gonzalez, 205 Conn. 673, 686, 535 A.2d 345 (1987); his claim is of constitutional magnitude. The first two prongs of Golding are thus met. We therefore proceed to a consideration of the third prong, namely, whether the alleged constitutional violation exists that deprived the defendant of a fair trial.
The United States Supreme Court’s decision in Godinez v. Moran, 509 U.S. 389, 399-400, 113 S. Ct. 2680, [663]*663125 L. Ed. 2d 321 (1993), mandates that any defendant who is competent to stand trial as a matter of state law is competent to waive the right to counsel. State v. Day, supra, 233 Conn. 825. Accordingly, we focus our inquiry on whether a § 54-56d (d) examination was required in order to determine whether the defendant was competent to stand trial and, therefore, to waive the right to counsel.
The standard we use to determine whether a defendant is competent under state law to stand trial is that set forth in Dusky v. United States, 362 U.S. 402, 80 S. Ct. 788, 4 L. Ed. 2d 824 (1960) (test for competence to stand trial is “ ‘whether [the defendant] has sufficient present ability to consult with his lawyer with a reasonable degree of rational understanding — and whether he has a rational as well as factual understanding of the proceedings against him’ ”). The Dusky standard has been codified at § 54-56d (a), which provides that “[a] defendant shall not be tried, convicted or sentenced while he is not competent. For the purposes of this section, a defendant is not competent if he is unable to understand the proceedings against him or to assist in his own defense.”
The defendant first argues that, because the trial court was aware of his prior psychiatric history and was also aware that the crimes that he was accused of involved “irrational behavior,” the court was constitutionally obligated to order a competency examination prior to accepting his waiver of counsel. We disagree.
“[T]he rule of Pate v. Robinson [383 U.S. 375, 86 S. Ct. 836, 15 L. Ed. 2d 815 (1966)] imposes a constitutional obligation, under the due process clause, to undertake an independent judicial inquiry, in appropriate circumstances, into a defendant’s competency to stand trial .... When a Pate inquiry is required, a court may not [664]*664rely on the defendant’s subjective appraisal of his own capacity or on the court’s personal observations of the defendant but must hold an evidentiary hearing into the defendant’s competence. . . .
“A defendant who challenges the validity of his [waiver] for lack of an evidentiary inquiry into his competence must make a showing that . . . the court had before it specific factual allegations that, if true, would constitute substantial evidence of mental impairment. Sanders v. United States, 373 U.S. 1, 21, 83 S. Ct. 1068, 10 L. Ed. 2d 148 (1963). Substantial evidence is a term of art. Evidence encompasses all information properly before the court, whether it is in the form of testimony or exhibits formally admitted or it is in the form of medical reports or other kinds of reports that have been filed with the court. Evidence is substantial if it raises a reasonable doubt about the defendant’s competency.” (Citations omitted; internal quotation marks omitted.) State v. Watson, 198 Conn. 598, 605, 504 A.2d 497 (1986).20 “The decision to grant [an evidentiary] hearing [into a defendant’s competence] requires the exercise of sound judicial discretion.” State v. Lloyd, 199 Conn. 359, 366, 507 A.2d 992 (1986).
At the time that it accepted the defendant’s waiver of counsel, the trial court was aware that the defendant: (1) had completed two and one-half years of college; (2) had a past history of mental illness but was not currently receiving psychiatric treatment or taking medication; and (3) had been fully and adequately informed of the consequences of representing himself. Although [665]*665the defendant was occasionally rude and argumentative during the waiver of counsel canvass, he gave rational and coherent responses to the trial court’s questions. His answers indicate that he was aware that, if he lost the case, he faced the possibility of twenty years in prison and that, as a result of a previous trial, he had some familiarity with courtroom procedure. Furthermore, prior to the trial court’s acceptance of the defendant’s waiver, he had been observed by three judges during seven pretrial hearings, four representatives of the state’s attorney’s office, and Delaney, none of whom saw fit either to request or to order a competency examination pursuant to § 54-56d (d). See footnote 18. The trial court could reasonably have concluded that insufficient evidence had been generated to raise a reasonable doubt concerning the defendant’s ability to understand the proceedings or assist in his own defense and, therefore, that an independent competency inquiry was not required prior to acceptance of his waiver of counsel. See State v. DesLaurier, 230 Conn. 572, 587-88, 646 A.2d 108 (1994) (independent competency examination not required if defendant [1] did not suffer from known or apparent mental illness that would impair ability to understand proceedings or assist in defense, [2] possessed minimum communication skills, [3] understood basic charges against him and right to accept or reject plea bargain, and [4] understood consequences of decision); State v. Watson, supra, 198 Conn. 605-606 (Pate inquiry not required if only evidence of possible incompetency was defendant’s unsubstantiated reference to history of psychiatric treatment and medication). We cannot conclude, therefore, that the trial court abused its discretion in failing to order, sua sponte, a Pate inquiry. With regard to the trial court’s initial acceptance of the defendant’s waiver, therefore, the defendant has failed to meet the third prong of Golding.
[666]*666B
The defendant also argues that, even if he had been competent at the time the trial court accepted his waiver of counsel, events that occurred during the course of the trial, specifically, his (1) failure to make a motion to sever the two cases, (2) lack of understanding of the voir dire process, (3) elicitation of prejudicial material from other similar incidents,21 (4) inappropriate behavior such as rudeness and throwing papers, and (5) lack of understanding of trial procedure, raised a reasonable doubt about his continued competence, and that the trial court, therefore, should have suspended the trial and ordered a competency examination. We disagree.
We agree that a defendant who is competent at the commencement of a trial may later become incompetent and that, when a reasonable doubt concerning the defendant’s competency is raised, the trial court must order a competency examination. State v. DesLaurier, supra, 230 Conn. 589 n.12. Much of the defendant’s argument, however, is based on the inadequacy of his legal skills as evidenced by examples of strategic errors he made in the course of representing himself. We are not persuaded that the defendant’s incompetence to stand trial is demonstrated by his lack of legal competence to try his case skillfully.
[667]*667The competence that is required for a defendant’s waiver of counsel to be valid is not, as the defendant suggests, the competence to represent himself, but is, rather, the competence to waive the right to counsel. Godinez v. Moran, supra, 509 U.S. 399-400. “Thus, while it is undeniable that in most criminal prosecutions defendants could better defend with counsel’s guidance than by their own unskilled efforts ... a criminal defendant’s ability to represent himself has no bearing upon his competence to choose self-representation.” (Citation omitted; internal quotation marks omitted.) Id., 400. “We harbor no illusions that a defendant’s decision to waive counsel and proceed pro se generally will lead to anything other than disastrous consequences. . . . Nonetheless, the values informing our constitutional structure teach that although [a defendant] may conduct his own defense ultimately to his own detriment, his choice must be honored out of that respect for the individual which is the lifeblood of the law.” (Citation omitted; internal quotation marks omitted.) State v. Day, supra, 233 Conn. 821. The defendant’s skill in representing himself, therefore, is of marginal relevance to his competence to choose self-representation.
The defendant also argues that the trial court’s decision to order a presentence psychiatric examination pursuant to § 17a-566; see footnote 12; indicates that the trial court became aware during the course of the trial that the defendant was mentally impaired and, accordingly, should have ordered a § 54-56d (d) examination.22 That argument is equally unavailing.
We must presume from the fact that the trial court ordered a § 17a-566 (a) examination that it suspected [668]*668that the defendant was “mentally ill and dangerous to himself or others.” Nevertheless, “[a]n accused may be suffering from a mental illness and nonetheless be able to understand the charges against him and to assist in his own defense.” State v. DeAngelis, 200 Conn. 224, 230, 511 A.2d 310 (1986). Section 17a-566 serves as a sentencing tool. The fact that the trial court suspected that the defendant might be mentally ill and ordered a § 17a-566 examination to assist it in determining whether the defendant required custodial care and treatment at Whiting Forensic Institute, rather than incarceration within the correctional system, does not, therefore, compel a conclusion that it had reason to believe that any mental impairment from which the defendant suffered prevented him from presenting a defense or proceeding pro se. Thus, with regard to the trial court’s continued acceptance of the defendant’s waiver, the defendant has failed to meet the third prong of Golding.
Ill
The defendant’s second alternate ground for affirming the judgment of the Appellate Court is that the trial court improperly instructed the jury regarding the element of intent necessary to find him guilty of breach of the peace. The defendant claims that the trial court’s instruction failed to include the judicial gloss that we applied, after the present case had been tried, to the same mens rea language in the disorderly conduct statute. See State v. Indrisano, 228 Conn. 795, 806-19, 640 A.2d 986 (1994). Because this claim was not preserved in the trial court, the defendant seeks to prevail under State v. Golding, supra, 213 Conn. 239-40, or, in the alternative, under the plain error doctrine. See Practice Book § 4185. We conclude that the defendant may prevail under Golding.
We agree with the defendant that the record is adequate for review and that he has raised a claim of consti[669]*669tutional magnitude. It “is . . . constitutionally axiomatic that the jury be instructed on the essential elements of a crime charged. State v. Williamson, 206 Conn. 685, 708, 539 A.2d 561 (1988). The due process clause of the fourteenth amendment protects an accused against conviction except upon proof beyond a reasonable doubt of every fact necessary to constitute the crime with which he is charged. In re Winship, 397 U.S. 358, 364, 90 S. Ct. 1068, 25 L. Ed. 2d 368 (1970).” (Internal quotation marks omitted.) State v. Denby, 235 Conn. 477, 483-84, 668 A.2d 682 (1995). The defendant’s claim is, therefore, of constitutional magnitude.
Moreover, it is clear from the record that the constitutional violation exists. The trial court’s mens rea instruction simply restated the pertinent language of § 53a-181; see footnote 3; and then referred to the generalized instruction that the court had given on intent: “It must be proved by the state beyond a reasonable doubt that the defendant intended to cause inconvenience, annoyance, or alarm in a public place by the commission of the forbidden conduct, which, in this case, is using abusive or obscene language. I remind you of what I just told you about intent. A person acts intentionally, with respect to a result, or to conduct, when his conscious objective is to cause such result, or to engage in such conduct.”
The statutory language setting forth the intent required for conviction of breach of the peace is identical to the language in General Statutes § 53a-182 (a),23 [670]*670which states the mens rea necessary for conviction of disorderly conduct. In order to avoid constitutional vagueness problems, we have applied interpretive gloss to the mens rea language of the disorderly conduct statute. State v. Indrisano, supra, 228 Conn. 795. In Indrisano, we concluded that “the mens rea language of § 53a-182 (a) can be formulated more precisely as follows: the predominant intent is to cause what a reasonable person operating under contemporary community standards would consider a disturbance to or impediment of a lawful activity, a deep feeling of vexation or provocation, or a feeling of anxiety prompted by threatened danger or harm. In order to sustain a conviction for disorderly conduct, the state must begin by demonstrating that the defendant had such a state of mind.” Id., 810-11. The need to apply interpretive gloss to § 53a-182 (a) that we perceived in Indrisano is equally present with regard to § 53a-181.
We therefore proceed to consideration of whether the trial court’s failure to include the Indrisano gloss in the jury instructions was harmless. The defendant argues that the state has not satisfied its burden of demonstrating that the improper jury instruction was harmless beyond a reasonable doubt. We agree.
Miele, Buyak and Connolly all testified that the defendant had been shouting and swearing at the police officers, thus attracting the attention of passersby, and that in response to the defendant’s behavior, Miele and Buyak had approached the defendant, who hit Miele. A struggle then ensued between the defendant and the officers, during which all three fell down the stairs, resulting in injuries to the officers. The defendant, on the other hand, testified on direct examination that he had been standing outside the train station but had not been shouting at Miele and Buyak, and that the two officers had approached him and asked him if he had a problem, to which he had responded, “Yes. The Hart[671]*671ford police are fucking me.” According to the defendant, Miele then grabbed hold of the defendant’s arm and the defendant, in an attempt to free himself, hit Miele. On cross-examination, the defendant testified that when the officers had asked him if he had a problem, he had responded only, “No,” and had not used abusive or obscene language and had not struck Miele.
Given that the testimony concerning this event is ambiguous regarding the defendant’s intent, it cannot be said beyond a reasonable doubt that the trial court’s omission of the Indrisano gloss did not contribute to the verdict. In other words, the jury, under the trial court’s instruction, could have fully credited the defendant’s testimony that his only provocative conduct was the statement “[t]he Hartford police are fucking me,” and, nevertheless, still found him guilty of breach of the peace, a result that is constitutionally infirm. The fourth prong of Golding is, therefore, satisfied and the defendant is entitled to a new trial on the breach of the peace charge.
The judgment of the Appellate Court is reversed in part and the case is remanded to that court with direction to affirm the judgment of the trial court with respect to the assault of a peace officer charges, and to remand the case to the trial court for a new trial on the breach of the peace charge.
In this opinion PETERS, C. J., and CALLAHAN and PALMER, Js., concurred.