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A New, Countermeasure-Resistant, Accurate, P300-Based Method for Detection of Concealed Information: Forensic and Anti-Terror Applications.

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Abstract:

P300 is an event-related EEG potential which has been used to detect deception in concealed knowledge protocols, since P300 is generated by meaningful, recognized stimuli (probes) presented rarely in a random sequence also containing frequent irrelevant stimuli from the same category as the probes. For example, a series of 8 potential murder weapons could be presented to a subject, with only one weapon (e.g., a knife) being the actual murder weapon that would be recognized by a guilty subject. The protocol works well (85-95% accuracy) if there are no countermeasures used by a subject, but it has been shown that simple covert responses such as mental imaging of specific faces in response to particular irrelevant stimuli converts these into secretly relevant stimuli capable of evoking P300s as large as the probe P300s, thus defeating the test. We have developed a new P300-based method called the Complex Trial Protocol (CTP) which has been shown to resist countermeasures effectively over the course of several experiments on more than 100 subjects. We have shown the CTP to remain sensitive and specific in forensic, malingering, and anti-terror paradigms. These data will be presented along with the theoretical explanation of how and why the new protocol is successful.
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Association:
Name: American Psychology - Law Society
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http://www.ap-ls.org/


Citation:
URL: http://citation.allacademic.com/meta/p405771_index.html
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MLA Citation:

Rosenfeld, Peter. "A New, Countermeasure-Resistant, Accurate, P300-Based Method for Detection of Concealed Information: Forensic and Anti-Terror Applications." Paper presented at the annual meeting of the American Psychology - Law Society, Westin Bayshore Hotel, Vancouver, BC, Canada, <Not Available>. 2014-11-28 <http://citation.allacademic.com/meta/p405771_index.html>

APA Citation:

Rosenfeld, P. "A New, Countermeasure-Resistant, Accurate, P300-Based Method for Detection of Concealed Information: Forensic and Anti-Terror Applications." Paper presented at the annual meeting of the American Psychology - Law Society, Westin Bayshore Hotel, Vancouver, BC, Canada <Not Available>. 2014-11-28 from http://citation.allacademic.com/meta/p405771_index.html

Publication Type: Symposium Paper
Abstract: P300 is an event-related EEG potential which has been used to detect deception in concealed knowledge protocols, since P300 is generated by meaningful, recognized stimuli (probes) presented rarely in a random sequence also containing frequent irrelevant stimuli from the same category as the probes. For example, a series of 8 potential murder weapons could be presented to a subject, with only one weapon (e.g., a knife) being the actual murder weapon that would be recognized by a guilty subject. The protocol works well (85-95% accuracy) if there are no countermeasures used by a subject, but it has been shown that simple covert responses such as mental imaging of specific faces in response to particular irrelevant stimuli converts these into secretly relevant stimuli capable of evoking P300s as large as the probe P300s, thus defeating the test. We have developed a new P300-based method called the Complex Trial Protocol (CTP) which has been shown to resist countermeasures effectively over the course of several experiments on more than 100 subjects. We have shown the CTP to remain sensitive and specific in forensic, malingering, and anti-terror paradigms. These data will be presented along with the theoretical explanation of how and why the new protocol is successful.


Similar Titles:
A P300-based, anti-terror, deception test

Algorithms for the detection of concealed information (CIT) from groups when the specific critical information is not available

?Words as Bridges?: Information- versus Relation-based Rhetorical Strategies in the War on Terror


 
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