Fixations and eye-blinks allow for detecting concealed crime related memories
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Fixations and eye-blinks allow for detecting concealed crime related memories. / Peth, Judith; Kim, Sung-Cheul Johann; Gamer, Matthias.
in: INT J PSYCHOPHYSIOL, Jahrgang 88, Nr. 1, 01.04.2013, S. 96-103.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Fixations and eye-blinks allow for detecting concealed crime related memories
AU - Peth, Judith
AU - Kim, Sung-Cheul Johann
AU - Gamer, Matthias
N1 - Copyright © 2013 Elsevier B.V. All rights reserved.
PY - 2013/4/1
Y1 - 2013/4/1
N2 - The Concealed Information Test (CIT) is a method of forensic psychophysiology that allows for revealing concealed crime related knowledge. Such detection is usually based on autonomic responses but there is a huge interest in other measures that can be acquired unobtrusively. Eye movements and blinks might be such measures but their validity is unclear. Using a mock crime procedure with a manipulation of the arousal during the crime as well as the delay between crime and CIT, we tested whether eye tracking measures allow for detecting concealed knowledge. Guilty participants showed fewer but longer fixations on central crime details and this effect was even present after stimulus offset and accompanied by a reduced blink rate. These ocular measures were partly sensitive for induction of emotional arousal and time of testing. Validity estimates were moderate but indicate that a significant differentiation between guilty and innocent subjects is possible. Future research should further investigate validity differences between gaze measures during a CIT and explore the underlying mechanisms.
AB - The Concealed Information Test (CIT) is a method of forensic psychophysiology that allows for revealing concealed crime related knowledge. Such detection is usually based on autonomic responses but there is a huge interest in other measures that can be acquired unobtrusively. Eye movements and blinks might be such measures but their validity is unclear. Using a mock crime procedure with a manipulation of the arousal during the crime as well as the delay between crime and CIT, we tested whether eye tracking measures allow for detecting concealed knowledge. Guilty participants showed fewer but longer fixations on central crime details and this effect was even present after stimulus offset and accompanied by a reduced blink rate. These ocular measures were partly sensitive for induction of emotional arousal and time of testing. Validity estimates were moderate but indicate that a significant differentiation between guilty and innocent subjects is possible. Future research should further investigate validity differences between gaze measures during a CIT and explore the underlying mechanisms.
KW - Adult
KW - Analysis of Variance
KW - Blinking
KW - Crime
KW - Eye Movements
KW - Female
KW - Humans
KW - Lie Detection
KW - Male
KW - Memory
KW - Psychophysics
KW - ROC Curve
KW - Statistics as Topic
KW - Young Adult
U2 - 10.1016/j.ijpsycho.2013.03.003
DO - 10.1016/j.ijpsycho.2013.03.003
M3 - SCORING: Journal article
C2 - 23511446
VL - 88
SP - 96
EP - 103
JO - INT J PSYCHOPHYSIOL
JF - INT J PSYCHOPHYSIOL
SN - 0167-8760
IS - 1
ER -