Mock jurors' perceptions of identifications made by intoxicated eyewitnesses

Abstract

Psychology research has generally neglected intoxicated eyewitnesses. The current study addressed this need by exploring mock jurors' perceptions of intoxicated witnesses. Undergraduate participants read summarized sexual or aggravated battery cases in which either the victim or a bystander identified the defendant under varying intoxication levels. They answered questions about the case and provided verdicts. Participants were sensitive to the effect that intoxication may have on witnesses' cognitive ability, but not to varying degrees of intoxication. Neither the role of the eyewitness nor the type of crime committed had an effect on perceptions of witness impairment. Participants' perceptions of witness impairment informed identification credibility ratings, and credibility assessments affected verdicts. Impairment and credibility ratings fully mediated intoxication's effect on verdicts. Unlike much prior research, our results suggest that mock jurors can consider potentially important witness information when rendering verdicts.

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