Norman, Danielle (2019) Factors modulating memory-based deception detection in concealed information tests. PhD thesis, University of Warwick.

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Abstract

Scientists have developed various deception detection methods to assist investigating officers working across a range of contexts from terrorism to insurance fraud. One of the most theoretically grounded and diagnostic deception tests is the Concealed Information Test (CIT) which is advocated by researchers and systematically applied in Japanese criminal cases. The CIT relies on theories of memory and attention to detect a suspect’s recognition of crime information placed amongst various control stimuli. Two CIT approaches are explored in this thesis. The first is the already established physiological CIT (measuring heart rate and skin conductance) whose validity has been demonstrated following decades of research and field application. The other is a recently proposed computer-based oddball task called the reaction-time CIT (RT-CIT) which also shows promise in the lab. Following a brief introduction to the scope of this thesis [1], a variety of unanswered questions relating to CITs are investigated. For example: Can we test crime scene recognition with the RT-CIT? [2]; When a crime is committed by a pair, should they be given a CIT together and what is the impact when their knowledge is shared? [3]; What dangers (or benefits) are there in using a human investigator to conduct the CIT? [4]; Can virtual reality be used to improve recognition and consequently CIT detection? [5]; What is the effect of administering a delayed CIT? [6]; Can the concept of verticality be exploited in the RT-CIT to increase detection? [7] and finally; what is the relationship between self-reported; motivation, stress, performance and countermeasure use in the CIT? [8]. Theoretical and practical implications for the CIT as a memory-based deception test, discussed and future research opportunities identified [9]. Overall, this work demonstrates that the CIT’s diagnosticity can be affected by various factors explored in this thesis.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	B Philosophy. Psychology. Religion > BF Psychology H Social Sciences > HV Social pathology. Social and public welfare
Library of Congress Subject Headings (LCSH):	Lie detectors and detection, Deception, Memory
Official Date:	August 2019
Dates:	Date Event August 2019 UNSPECIFIED
Institution:	University of Warwick
Theses Department:	Department of Psychology
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Watson, Derrick G.
Format of File:	pdf
Extent:	629 leaves : illustrations (some colour)
Language:	eng

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