Journal article

Publication year: 2011

Pages: 217-226

Journal: International Journal of Psychophysiology

Volume number: 80

Issue number: 3

ISSN: 0167-8760

eISSN: 1872-7697

DOI Link: https://doi.org/10.1016/j.ijpsycho.2011.03.010

Publisher: Elsevier

Abstract: 
One approach to investigate psychophysiological processes occurring in the Concealed Information Test (CIT) is to use a parallel task, which engages specific mental activity in addition to the CIT. In the present study, the influence of an interfering n-back task on the physiological responses in a Concealed Information Test (CIT) was investigated. Forty participants underwent a mock-crime experiment with a modified CIT. In a within-subject design, the CIT was applied in blocks with and without an additional n-back task. Electrodermal activity (EDA), respiration line length (RLL), heart rate (HR), and finger pulse waveform length (FPWL) were registered. Reaction times in the n-back task and the CIT were recorded. The parallel task enhanced the differential EDA response to probe vs. irrelevant items, while it diminished the response differences for RLL and phasic HR. Results shed light upon working-memory-related processes in the CIT. The diverging effects of the interfering mental activity on electrodermal and cardiopulmonary measures, if replicable, might contribute to a better understanding of the psychophysiological responsiveness underlying the CIT. (C) 2011 Elsevier B.V. All rights reserved.

Harvard Citation style: Ambach, W., Stark, R. and Vaitl, D. (2011) An interfering n-back task facilitates the detection of concealed information with EDA but impedes it with cardiopulmonary physiology, International Journal of Psychophysiology, 80(3), pp. 217-226. https://doi.org/10.1016/j.ijpsycho.2011.03.010

APA Citation style: Ambach, W., Stark, R., & Vaitl, D. (2011). An interfering n-back task facilitates the detection of concealed information with EDA but impedes it with cardiopulmonary physiology. International Journal of Psychophysiology. 80(3), 217-226. https://doi.org/10.1016/j.ijpsycho.2011.03.010