Mock Juror Perceptions of Intoxicated Eyewitness Credibility.

Debbie Crossland, Wendy Kneller, Rachel Wilcock

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Abstract

To ascertain whether intoxication at the time of a crime affects a witness’s credibility with mock jurors, 240 jury eligible individuals completed an online questionnaire rating the convincingness, confidence, competence, honesty, believability, consistency, credibility, accuracy, and completeness of one of six witness testimonies. Although sober when interviewed, witnesses were either sober, moderately, or severely intoxicated (BAC under/over .08%) during the crime, with half of jurors being provided with this information. Within each condition, the testimony was either long or short, with the former being more complete. From the credibility ratings, a single Principal Component Analysis factor was extracted. Subsequent ANOVA analyses indicated that knowledge of the witness’s intoxication and a less complete account led to lower credibility ratings. With no main effect of intoxication, the testimony of an intoxicated witness itself was not perceived as less credible. Findings are discussed in relation to the criminal justice system and future research.
Original languageEnglish
Pages (from-to)105-116
Number of pages12
JournalJournal of Police and Criminal Psychology
Volume38
Issue number1
Early online date15 Feb 2021
DOIs
Publication statusPublished - 15 Feb 2021

Keywords

  • Alcohol intoxication
  • Credibility
  • Eyewitness recall
  • Mock jurors
  • Perception

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