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The role of psychophysiology in fore...

The University of Arizona.

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The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios./
Author:	Mertens, Ralf.
Description:	54 p.
Notes:	Adviser: John JB Allen.
Contained By:	Dissertation Abstracts International67-01B.
Subject:	Psychology, Experimental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3206067
ISBN:	9780542519987

The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios.
Mertens, Ralf.

The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios. - 54 p.

Adviser: John JB Allen.

Thesis (Ph.D.)--The University of Arizona, 2006.

ERPs, specifically the P3, have been proposed as an alternative to traditional polygraphy, with one approach (i.e., Brain Fingerprinting) being promoted as infallible to justify its use on a commercial basis. Concerns have been voiced, however, that such techniques would have to undergo peer-reviewed studies to satisfy validity concerns. Rosenfeld et al. (2004) found, for example, that mental countermeasures were effective in reducing detection rates using an amplitude based, peak-to-peak measure. The present study attempted to replicate and extend Rosenfeld et al.'s study, and to test Brain Fingerprinting's vulnerability to participant manipulation by employing a highly realistic virtual reality crime scenario, multiple countermeasures, and Bayesian and bootstrapping analytic approaches to classify individuals as being guilty or innocent. Participants reported a high degree of realism supporting the external validity of this study and suggesting future uses of virtual environments. Hit rates across statistical methods were significantly lower for standard guilty and innocent participants as compared to previous studies; countermeasures reduced the overall hit rates even further. Brain Fingerprinting was as vulnerable to countermeasures as other statistical measures, and produced a significant number of indeterminate outcomes. Nevertheless, innocent participants remained protected from being falsely accused across statistical methods, consistent with findings of prior studies. Reaction times were determined unsuitable in determining guilt or innocence in this study. Results suggested that ERP based deception detection measures might lack the level of validity required for use in an applied setting.

ISBN: 9780542519987Subjects--Topical Terms:

517106
Psychology, Experimental.

The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios.
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020 $a 9780542519987
035 $a (UMI)AAI3206067
035 $a AAI3206067
040 $a UMI $c UMI
100 1 $a Mertens, Ralf. $3 1025984
245 1 4 $a The role of psychophysiology in forensic assessments: Deception detection, ERPs and virtual reality mock crime scenarios.
300 $a 54 p.
500 $a Adviser: John JB Allen.
500 $a Source: Dissertation Abstracts International, Volume: 67-01, Section: B, page: 0592.
502 $a Thesis (Ph.D.)--The University of Arizona, 2006.
520 $a ERPs, specifically the P3, have been proposed as an alternative to traditional polygraphy, with one approach (i.e., Brain Fingerprinting) being promoted as infallible to justify its use on a commercial basis. Concerns have been voiced, however, that such techniques would have to undergo peer-reviewed studies to satisfy validity concerns. Rosenfeld et al. (2004) found, for example, that mental countermeasures were effective in reducing detection rates using an amplitude based, peak-to-peak measure. The present study attempted to replicate and extend Rosenfeld et al.'s study, and to test Brain Fingerprinting's vulnerability to participant manipulation by employing a highly realistic virtual reality crime scenario, multiple countermeasures, and Bayesian and bootstrapping analytic approaches to classify individuals as being guilty or innocent. Participants reported a high degree of realism supporting the external validity of this study and suggesting future uses of virtual environments. Hit rates across statistical methods were significantly lower for standard guilty and innocent participants as compared to previous studies; countermeasures reduced the overall hit rates even further. Brain Fingerprinting was as vulnerable to countermeasures as other statistical measures, and produced a significant number of indeterminate outcomes. Nevertheless, innocent participants remained protected from being falsely accused across statistical methods, consistent with findings of prior studies. Reaction times were determined unsuitable in determining guilt or innocence in this study. Results suggested that ERP based deception detection measures might lack the level of validity required for use in an applied setting.
590 $a School code: 0009.
650 4 $a Psychology, Experimental. $3 517106
650 4 $a Psychology, Physiological. $3 1017869
650 4 $a Sociology, Criminology and Penology. $3 1017569
690 $a 0623
690 $a 0627
690 $a 0989
710 2 $a The University of Arizona. $3 1017508
773 0 $t Dissertation Abstracts International $g 67-01B.
790 $a 0009
790 1 0 $a Allen, John JB, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3206067