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The effects of practicing a novel countermeasure on both the semantic and episodic memory-based complex trial protocols.

Authors
  • Olson, Joseph M1
  • Rosenfeld, J Peter2
  • Ward, Anne C3
  • Sitar, Evan J3
  • Gandhi, Adithi3
  • Hernandez, Joanna3
  • Fanesi, Brandon3
  • 1 Department of Psychology, Northwestern University, United States of America. Electronic address: [email protected] , (United States)
  • 2 Department of Psychology, Northwestern University, United States of America; Institute for Neuroscience, Northwestern University, United States of America. , (United States)
  • 3 Department of Psychology, Northwestern University, United States of America. , (United States)
Type
Published Article
Journal
International journal of psychophysiology : official journal of the International Organization of Psychophysiology
Publication Date
Mar 01, 2022
Volume
173
Pages
82–92
Identifiers
DOI: 10.1016/j.ijpsycho.2022.01.009
PMID: 35066095
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

This study applied a countermeasure-resistant version of the Concealed Information Test - the Complex Trial Protocol (CTP) - in an information recognition scenario. We replicated and extended the effects of a novel countermeasure developed by Lukács et al., (2016) on both Semantic and Episodic CTPs. We measured participants' response time and P300 event-related potential to rare, crime-relevant probe stimuli, or frequent, non-crime-relevant irrelevant stimuli in two ways: 1) probe vs the average of all irrelevants (PvIall), and 2) probe vs the maximum irrelevant (PvImax). We hypothesized that countermeasure use would only impair information recognition (as indexed by P300) when participants had practiced the countermeasure beforehand. We further hypothesized that recognition of less salient, Episodic information (i.e., jewelry items from a mock crime) would be impaired by countermeasure use more than the recognition of highly salient, Semantic information (i.e., birthdates). Individual diagnostics based on the area under the receiver operating characteristic curve (Semantic CTP: practice n = 22, non-practice n = 23; Episodic CTP: practice n = 19, non-practice n = 18) revealed that the Semantic CTP was affected by the novel countermeasure, but both PvIall and PvImax analyses remained diagnostically useful. The Episodic CTP's performance, however, was reduced to chance, regardless of practice or analysis type. These results are important for both the field of deception detection and the CTP literature. Research on improvements to the Episodic CTP is required. Copyright © 2022 Elsevier B.V. All rights reserved.

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