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EEG lie detection evidence and potential Australian jurors

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posted on 2025-04-01, 01:34 authored by Rebecca WilcoxsonRebecca Wilcoxson, Matthew BrowneMatthew Browne, Nathan Brooks, Paul DuckettPaul Duckett
Electroencephalogram (EEG) lie detection is a proposed method of determining criminal culpability, though it is currently unknown how this method will impact juror decisions. The present study investigated the persuasiveness of EEG lie detection with potential Australian jurors. Through a vignette-based experiment, participants (N = 421) were required to make juror-based decisions (i.e. guilty, not guilty and unsure) on a 1989 U.S. trial involving the brutal murder of a young woman. Participants read about forensic evidence (blood, shoeprint and fibre analysis) presented at the 1989 trial that led to the suspect’s conviction. Half of the participants also read about an EEG lie detection test conducted 11 years post-conviction that indicated the convicted man was innocent. Chi-square analysis showed the EEG information significantly affected determinations of guilt. Guilty verdicts were made by 41% of participants who did not read the EEG evidence. However, only 27% of participants who read the EEG evidence voted guilty. The implications of implementing EEG lie detection are discussed.

History

Volume

40

Issue

1

Start Page

42

End Page

54

Number of Pages

13

eISSN

1936-6469

ISSN

0882-0783

Publisher

Springer Science and Business Media LLC

Additional Rights

CC BY 4.0

Language

en

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2024-03-29

Era Eligible

  • Yes

Journal

Journal of Police and Criminal Psychology

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