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Evidence

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P300

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Applications Of Neuroscience In Criminal Law: Legal And Methodological Issues, John B. Meixner Jr. Jan 2015

Applications Of Neuroscience In Criminal Law: Legal And Methodological Issues, John B. Meixner Jr.

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The use of neuroscience in criminal law applications is an increasingly discussed topic among legal and psychological scholars. Over the past 5 years, several prominent federal criminal cases have referenced neuroscience studies and made admissibility determinations regarding neuroscience evidence. Despite this growth, the field is exceptionally young, and no one knows for sure how significant of a contribution neuroscience will make to criminal law. This article focuses on three major subfields: (1) neuroscience-based credibility assessment, which seeks to detect lies or knowledge associated with a crime; (2) application of neuroscience to aid in assessments of brain capacity for culpability, especially …


Review Of Recent Studies And Issues Regarding The P300-Based Complex Trial Protocol For Detection Of Concealed Information, J. Peter Rosenfeld, Xiaoqing Hu, Elena Labkovsky, John B. Meixner Jr., Michael R. Winograd Jan 2013

Review Of Recent Studies And Issues Regarding The P300-Based Complex Trial Protocol For Detection Of Concealed Information, J. Peter Rosenfeld, Xiaoqing Hu, Elena Labkovsky, John B. Meixner Jr., Michael R. Winograd

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In this review, the evolution of new P300-based protocols for detection of concealed information is summarized. The P300-based complex trial protocol (CTP) is described as one such countermeasure (CM)-resistant protocol. Recent lapses in diagnostic accuracy (from 90% to 75%) with CTPs applied to mock crime protocols are summarized, as well as recent enhancements to the CTP which have restored accuracy. These enhancements include 1) use of performance feedback during testing, 2) use of other ERP components such as N200 in diagnosis, 3) use of auxiliary tests, including the autobiographical implicit association test, as leading to restored diagnostic accuracy, and 4) …


A Novel Countermeasure Against The Reaction Time Index Of Countermeasure Use In The P300-Based Complex Trial Protocol For Detection Of Concealed Information, Alexander Sokolovsky, Jessica Rothenberg, Elena Labkovsky, John B. Meixner Jr., J. Peter Rosenfeld Jan 2011

A Novel Countermeasure Against The Reaction Time Index Of Countermeasure Use In The P300-Based Complex Trial Protocol For Detection Of Concealed Information, Alexander Sokolovsky, Jessica Rothenberg, Elena Labkovsky, John B. Meixner Jr., J. Peter Rosenfeld

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A P300 deception detection protocol was tested using simultaneous versus serial countermeasures and stimulus acknowledgment responses. Previously, P300 showed recognition and elevated reaction time identified countermeasure use. Probe-irrelevant P300 differences were significant in both countermeasure groups and control group. Detection rates were 11/12 for controls, 10/12 for serial countermeasure users, and 11/13 for simultaneous countermeasure users. Reaction time detected countermeasure use in serial responders, but not simultaneous responders. The simultaneous response reaction times were indistinguishable from controls.


Countermeasure Mechanisms In A P300-Based Concealed Information Test, John B. Meixner Jr., J. Peter Rosenfeld Jan 2010

Countermeasure Mechanisms In A P300-Based Concealed Information Test, John B. Meixner Jr., J. Peter Rosenfeld

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The detection of deception has been the focus of much research in the past 20 years. Though much controversy has surrounded one deception detection protocol, the “Control Question Test” (NRC 2003, Ben-Shakhar 2002), an alternative test, the Guilty Knowledge Test (GKT), developed by Lykken (1959, 1960), is based on scientific principles and has been well-received in the scientific community. The GKT presents subjects with various stimuli, one of which is a guilty knowledge item (termed the probe, such as the gun used to commit a crime). The other stimuli in the test consist of control items that are of the …