Commonwealth v. Gomes: The SJC’s New Jury Instruction on Eyewitness Identification Attempts to Protect Defendants While Recognizing the Ever-Changing Nature of Scientific Evidence
On January 12, 2015 the Supreme Judicial Court (“SJC”) issued an opinion in Commonwealth v. Gomes holding that from now on juries must be instructed on scientific principles regarding eyewitness identification, and drafted a provisional jury instruction for judges to give until an official model instruction is developed. The decision is not retroactive, and did not apply to Gomes’s case itself. The case followed closely after two other SJC cases highlighting the fallibility of eyewitness identification.
The provisional jury instruction requires jurors to be told of five “generally accepted” scientific principles about eyewitness identification, based on a report issued by the SJC’s Study Group on Eyewitness Evidence:
- Human memory does not function like a recording, but is instead a complex, multi-stage process.
- An eyewitness’s expressed certainty about the identification may not indicate the identification is accurate, particularly if the witness previously expressed less certainty
- Stress can negatively impact a witness’s ability to make an accurate eyewitness identification
- Information that witnesses receive before or after making an identification can influence the witness’s memory and recollection of the identification
- Prior viewing of the same suspect in identification procedures may reduce the reliability of the later identification of that suspect
ZDB of-counsel attorney Elizabeth Lunt told the Boston Globe that jurors misunderstanding the accuracy of eyewitness identification has been a problem “for years and years,” and that this decision will help jurors understand the scientific principles at hand.