Department of Psychology, Colorado State University.
The Influence of fMRI Lie Detection Evidence on Juror Decision-Making
Article first published online: 12 JUL 2011
Copyright © 2011 John Wiley & Sons, Ltd.
Behavioral Sciences & the Law
Special Issue: Current Directions
Volume 29, Issue 4, pages 566–577, July/August 2011
How to Cite
McCabe, D. P., Castel, A. D. and Rhodes, M. G. (2011), The Influence of fMRI Lie Detection Evidence on Juror Decision-Making. Behav. Sci. Law, 29: 566–577. doi: 10.1002/bsl.993
David P. McCabe died unexpectedly on January 11, 2011. He was a brilliant collaborator and true friend, and will be missed.
- Issue published online: 27 JUL 2011
- Article first published online: 12 JUL 2011
- Manuscript Accepted: 10 MAR 2011
- Manuscript Revised: 28 FEB 2011
- Manuscript Received: 3 JUN 2010
In the current study, we report on an experiment examining whether functional magnetic resonance imaging (fMRI) lie detection evidence would influence potential jurors' assessment of guilt in a criminal trial. Potential jurors (N = 330) read a vignette summarizing a trial, with some versions of the vignette including lie detection evidence indicating that the defendant was lying about having committed the crime. Lie detector evidence was based on evidence from the polygraph, fMRI (functional brain imaging), or thermal facial imaging. Results showed that fMRI lie detection evidence led to more guilty verdicts than lie detection evidence based on polygraph evidence, thermal facial imaging, or a control condition that did not include lie detection evidence. However, when the validity of the fMRI lie detection evidence was called into question on cross-examination, guilty verdicts were reduced to the level of the control condition. These results provide important information about the influence of lie detection evidence in legal settings. Copyright © 2011 John Wiley & Sons, Ltd.