Alcohol-intoxicated witnesses: A review of the current literature and new steps forward.

Hagsand, Angelica, 1985 (author): Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology

Roos Af Hjelmsäter, Emma, 1976 (author): Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology

Granhag, Pär-Anders, 1964 (author): Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology

Fahlke, Claudia, 1964 (author): Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology

Söderpalm Gordh, Anna, 1971 (author): Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för psykiatri och neurokemi,Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry

(creator_code:org_t)

2014
2014
English.
In: Nordic Network for Psychology and Law (NNPL), 7-8 November 2014, Oslo, Norway.

Abstract Subject headings

Eyewitnesses often provide central investigative leads in many criminal cases, and are often the sole source of evidence. Many witnesses are under the influence of alcohol during the crime, and/or during the investigative interview and line-up. There is evidence that jurors and expert witnesses perceive intoxicated witnesses as more cognitively impaired and less credible than sober ones. The few studies that have examined the effects of alcohol on witness memory for events cast doubt on whether expert witnesses’ and jurors’ inferences are warranted. That is, in experimental studies, intoxicated witnesses rarely differ from sober or placebo witnesses in terms of accuracy and quantity of information recalled or in their ability to recognize a perpetrator in a lineup. At the few occasions when a detrimental effect of alcohol on witness memory has been found it resulted in small differences between alcohol and sober or placebo participants, barely of any practical significance for law enforcement personnel. The present literature review indicates that intoxicated witnesses might be better than their reputation, and that witnesses who have a low to moderate intoxication level (BAC <0.10%) can be rather reliable sources of information in criminal investigations. However, limitations in the previous studies are highlighted and new steps of further research is discussed.

By the author/editor: Hagsand, Angelic ...; Roos Af Hjelmsät ...; Granhag, Pär-And ...; Fahlke, Claudia, ...; Söderpalm Gordh, ...

About the subject

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