An interfering Go/No-go task does not affect accuracy in a Concealed Information Test

Ambach, Wolfgang; Stark, Rudolf; Peper, Martin; Vaitl, Dieter (2008). An interfering Go/No-go task does not affect accuracy in a Concealed Information Test. International journal of psychophysiology, 68(1), pp. 6-16. Amsterdam: Elsevier 10.1016/j.ijpsycho.2007.11.004

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Following the idea that response inhibition processes play a central role in concealing information, the present study investigated the influence of a Go/No-go task as an interfering mental activity, performed parallel to the Concealed Information Test (CIT), on the detectability of concealed information. 40 undergraduate students participated in a mock-crime experiment and simultaneously performed a CIT and a Go/No-go task. Electrodermal activity (EDA), respiration line length (RLL), heart rate (HR) and finger pulse waveform length (FPWL) were registered. Reaction times were recorded as behavioral measures in the Go/No-go task as well as in the CIT. As a within-subject control condition, the CIT was also applied without an additional task. The parallel task did not influence the mean differences of the physiological measures of the mock-crime-related probe and the irrelevant items. This finding might possibly be due to the fact that the applied parallel task induced a tonic rather than a phasic mental activity, which did not influence differential responding to CIT items. No physiological evidence for an interaction between the parallel task and sub-processes of deception (e.g. inhibition) was found. Subjects' performance in the Go/No-go parallel task did not contribute to the detection of concealed information. Generalizability needs further investigations of different variations of the parallel task.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute of Legal Medicine

UniBE Contributor:

Peper, Martin

ISSN:

0167-8760

ISBN:

18180065

Publisher:

Elsevier

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:56

Last Modified:

17 Mar 2015 22:03

Publisher DOI:

10.1016/j.ijpsycho.2007.11.004

PubMed ID:

18180065

Web of Science ID:

000255322600002

URI:

https://boris.unibe.ch/id/eprint/23920 (FactScience: 45165)

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