¶1The defendant, Pedro Patlan Alvarez, was convicted of second-degree assault
¶2I.
¶3This prosecution stems from an assault that occurred outside the Silver Moon Bar in Fort Lupton on June 21, 1977.
¶4Velasquez sustained a badly broken jaw and other injuries as a result of the beating. He was unable to describe the persons who attacked him and was unsure of their number.
¶5The defendant, Alvarez, testified that he was at the scene of the beating but that he attempted to stop it. Alvarez gave the following account of the events of the day. On the afternoon of June 21,1977, he drove from his home to Fort Luptón, where he and Joe Diaz met Ernesto Martinez, Jr., across the street from the Silver Moon Bar.
¶6That evening, Alvarez’ testimony continued, the three men drove back into town, where Martinez stopped to visit his father. The three had been drinking beer throughout the course of the afternoon. Martinez went inside his father’s house while the defendant and Diaz stayed in the truck. When Martinez returned, he appeared upset, stating to the others that someone had been bothering his father that afternoon. Martinez drove his pickup to the Silver Moon Bar and went inside while Alvarez and Diaz stayed in the truck. The defendant testified that he did not get out of the truck until he saw a crowd congregating around a fight outside the bar. Martinez and a man in a white shirt, whom the defendant did not know, were beating Velasquez. The defendant described the man in the white shirt as tall, with long hair and a small beard. Alvarez testified that he and Diaz approached the fight scene, and Alvarez tried to grab Martinez from behind in an effort to restrain him.
¶7Alvarez was apprehended before he reached home by a police officer who noted that the appearance of the defendant and his truck matched Gonzales’ description of a bearded man wearing a black hat and driving a pickup truck with a described license number.
¶8Prior to trial, defense counsel moved to suppress evidence of the inadvertent one-on-one showup at the police station, and also requested that a lineup identification procedure be conducted to determine if the state’s two identification witnesses, Gonzales and Lopez, would be able to identify the defendant. A lineup was conducted at a pretrial suppression hearing on November 30, 1977, at which time Gonzales selected a man other than the defendant and Lopez did not pick any of the persons in the lineup. The defendant was among the men in the lineup but had shaved his beard between the date of the incident and the lineup. Defense counsel suggested that Alvarez would grow his beard before trial for the purpose of a second lineup procedure in order to meet the anticipated argument by the prosecution that the first lineup was unreliable because the defendant had appeared without a beard. The court then ruled that Gonzales’ identification testimony would not be limited or suppressed in any way and that, if Lopez still should be unable to identify the defendant in the second lineup, Lopez’ testimony would be limited to her description of the assailants as she remembered them.
¶9On the first day of trial, less than a month after the pretrial suppression hearing, another lineup was conducted after jury selection but prior to the opening statements. The defendant’s beard had *1130grown, and he later testified it looked the same as in a picture taken at the time of his arrest and received in evidence. Gonzales again did not identify the defendant, but picked the same man she had chosen out of the first lineup. Lopez was unable to identify any of the lineup participants as the black-hatted assailant. After the lineup, defense counsel renewed his motion to suppress all identification evidence. The prosecutor stipulated that he would not ask either Lopez or Gonzales to identify the defendant at trial as one of the participants in the assault by pointing him out in the courtroom. The court ruled that Gonzales and Lopez could describe the assailants as they remembered them and Gonzales could testify about the one-on-one showup. At trial, during the defendant’s case, Gonzales and Lopez testified about the results of the two pretrial lineups.
¶10When the arresting police officer was cross-examined during the trial, defense counsel introduced into-evidence a photograph of the defendant taken at the police station on the night of his arrest.
¶11At the close of evidence, the court instructed the jury on the law and included the standard instruction that the prosecution was required to prove each element of the offense “beyond a reasonable doubt.”
¶12II.
¶13Alvarez argues that the juror’s consultation of her dictionary during deliberations and her relation of dictionary definitions to another juror constitute such serious misconduct that prejudice to the defendant sufficient to require reversal-can be implied from proof of the misconduct alone without an affirmative showing of prejudice. Alternatively, Alvarez contends that he has shown prejudice sufficient for rever*1131sal because the affidavit of one juror establishes that she decided that her doubts were not reasonable in reliance on the dictionary definitions, showing a direct causal relationship between use of improper material and the defendant’s conviction. We agree that the record in this case establishes that the juror’s use of a dictionary substantially prejudiced the defendant, so his conviction must be reversed. This makes it unnecessary to consider the merit of the defendant’s proposition that even without a showing of prejudice a juror’s use of a dictionary requires reversal.
¶14There can be no question but that a jur- or’s consultation of a dictionary to assist in understanding legal terminology in the court’s instructions is improper. Jurors are required to follow only the law as it is given in the court’s instructions to the jury, whether or not they personally agree or disagree with such instructions. Colorado Jury Instructions (Criminal) 1:3.
¶15The remaining question is whether this improper juror conduct requires reversal. In considering whether other types of jury misconduct mandate reversal of a conviction, we have consistently held that a defendant must establish that he was prejudiced by the misconduct in order to overturn his conviction. People v. Mackey, 185 Colo. 24, 521 P.2d 910 (1974); People v. Peery, 180 Colo. 161, 503 P.2d 350 (1972); Milano v. People, 159 Colo. 419, 412 P.2d 225 (1966); Segura v. People, 159 Colo. 371, 412 P.2d 227 (1966). The defendant urges, however, that prejudice should be conclusively presumed when a juror consults a dictionary for aid in understanding words used in the court’s instructions. We need not reach that question in this case, for the record amply establishes that the defendant was prejudiced in fact by juror misconduct.
¶16Two jurors submitted affidavits
¶17The central fact is that the juror who looked up the words was aided by the dictionary definitions in deciding that her doubt was not reasonable. This decision was essential to the defendant’s conviction. We hold that this adequately established prejudice resulting from juror misconduct and requires reversal.
¶18III.
¶19Because the juror misconduct constitutes sufficient grounds for reversal, we are not required to decide whether the defendant’s two other assignments of error also require that his conviction be overturned. However, we elect to address these issues since the trial court will of necessity be confronted with them again on retrial.
¶20The defendant argues that his due process rights were violated when the trial court denied his motion to suppress Gonzales’ testimony regarding the one-on-one showup at the police station shortly after the incident. He also asserts that the admission of the in-court identification of a police mug shot by Gonzales and Lopez denied him due process because the identification was tainted by the impermissible suggestion of the district attorney when he showed the photograph to the witnesses prior to their testimony. Because identity is not an issue in this case under the facts as they were developed at the trial, we conclude that the identification procedures do not implicate the defendant’s due process rights.
¶21It is well established that a defendant’s right to due process of law is violated by admitting into evidence the results of an unnecessarily suggestive identification procedure unless the totality of the circumstances establishes that the procedure did not result in a substantial likelihood of an irreparable misidentification despite its suggestiveness. Manson v. Brathwaite, 432 U.S. 98, 97 S.Ct. 2243, 53 L.Ed.2d 140 (1977). The factors to be considered in evaluating the reliability of the identification are:
the opportunity of the witness to view the criminal at the time of the crime, the witness’ degree of attention, the accuracy of his prior description of the criminal, the level of certainty demonstrated at the confrontation, and the time between the crime and the confrontation.
¶22Manson v. Brathwaite, supra, 432 U.S. at 114, 97 S.Ct. at 2253, 53 L.Ed.2d at 154; accord, People v. Smith, 620 P.2d 232, 238 (Colo.1980). In applying the totality of the circumstances test, these factors must be weighed together against the corrupting effect of the suggestive identification itself. Manson v. Brathwaite, supra.
¶23The cases represented by Manson v. Brathwaite and People v. Smith involve contexts where identification is an essential element of the prosecution’s case and is not admitted by the defendant. Under the proof as developed in the case now before us, however, the defendant admits that he was present at the scene of the assault. Moreover, he agrees that he was the bearded person wearing a black hat and coveralls. The uncontroverted evidence was that only one person fit that description. The crucial difference between the defendant’s testimony and that of prosecution witnesses Gonzales and Lopez was the nature of his participation in the fray. Gonzales and Lopez testified that he was kicking the victim. The defendant maintained that, to the contrary, he was attempting to restrain Martinez from further assaulting Velasquez. Thus, the issue was not whether the defendant was the person seen by Gonzales and Lopez; instead, the question is the nature of his activities.
¶24*1133The -due process value protected by the exclusionary requirement of Manson v. Brathwaite, supra,is fairness. Id.Under the totality of circumstances present here, no principle of fairness was violated by allowing the jury to consider identification evidence that merely corroborated the defendant’s own admission that he was the person observed at the scene of the crime. We therefore hold that, upon consideration of the record in its entirety, due process of law was not violated by admitting Gonzales’ testimony of the police station show-up and by admitting the in-court photographic identification by Gonzales and Lopez.
¶25On retrial it will be the prosecution’s burden to prove each element of the offense beyond a reasonable doubt. E.g., In Re Winship, 397 U.S. 358, 90 S.Ct. 1068, 25 L.Ed.2d 368 (1970); People v. Chavez, 621 P.2d 1362 (Colo.1981). This burden includes establishing that the defendant was present and participated in the assault. If the record at the new trial contains proof of the defendant’s admission that he was the man in the black hat, beard and coveralls involved in the incident when the challenged identification evidence is presented, no due process issue will be implicated and the admissibility of that evidence should be determined by usual evidentiary principles. As this seems to be the likely evidentiary posture on retrial, we believe no useful purpose would be served by evaluating the identification evidence under due process principles in this opinion.
¶26We reverse the judgment of the Colorado Court of Appeals and return the case to that court with directions that it be remanded to the district court for a new trial.
¶27. The defendant was convicted under Section 18-3-203(l)(a), C.R.S.1973.
¶28. The description of the incident is based on the testimony of the defendant, the victim, and the two other eyewitnesses who testified at the trial. The most significant conflict in this essentially consistent evidence is whether the defendant participated in the assault, as the two eyewitnesses testified, or attempted to restrain one of the assailants, as the defendant related.
¶29.Gonzales observed this incident and testified that Joe Diaz and a man in a white shirt also arrived in Alvarez’ pickup and left with Mar*1129tinez. Alvarez made no mention of being with a man in a white shirt.
¶30. During the defendant’s case, Gonzales and Lopez reaffirmed their testimony that the man in the black hat and beard was kicking the victim. They also stated that they did not see that man attempt to pull Martinez away from the victim.
¶31. Gonzales had observed the man with the black hat and beard park the pickup near the Silver Moon Bar earlier that day.
¶32. In a discussion held out of the hearing of the jury, defense counsel explained that his purpose in introducing the photograph was to show it to Gonzales and Lopez in the hope that they would not be able to identify it as a picture of the man they had seen commit the assault. Defense counsel felt this tactic might be successful since both Gonzales and Lopez had failed to identify the defendant in the two lineups.
¶33. The full instruction reads as follows:
The burden of proof is upon the People to prove to the satisfaction of the jury beyond a reasonable doubt the existence of all of the elements necessary to constitute the crime charged.
Reasonable doubt means a doubt based upon reason and common sense which arises from a fair and rational consideration of all of the evidence, or the lack of evidence, in the case. It is a doubt which is not a vague, speculative or imaginary doubt, but such a doubt as would cause reasonable men to hesitate to act in matters of importance to themselves.
If you find from the evidence that each and every element has been proven beyond a reasonable doubt, you will find the defendant guilty. If you find from the evidence that the People have failed to prove any one or more of the elements beyond a reasonable doubt you will find the defendant not guilty.
¶34The court gave the instruction orally and in a written form available to the jurors during their deliberations.
¶35. Colorado Jury Instructions (Criminal) 1:3 provides in pertinent part:
The law as given by the court constitutes the only law for your guidance, and it is your duty to accept and follow it even though you may disagree with it.
¶36The jury in this case was so instructed.
¶37. The state contends that affidavits of jurors may not be used to impeach their verdict. While this is the rule when such affidavits are used to reveal the mental processes of the jurors in reaching the verdict, affidavits may be considered when misconduct and external influences are involved. See Santilli v. Pueblo, 184 Colo. 432, 521 P.2d 170 (1974).
¶38.The record does not identify the dictionary consulted or set forth the definitions found there.
¶39. It is futile to speculate how the juror might have voted without the benefit of dictionary definitions and equally futile to inquire whether the use made of the definitions resulted in a meaning of reasonable doubt consistent with the law. The defendant cannot reasonably be required to resolve these problematic matters as a part of his required showing of prejudice.