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Cerebral correlates of faking

  • Direct assessment of attitudes toward socially sensitive topics can be affected by deception attempts. Reaction-time based indirect measures, such as the Implicit Association Test (IAT), are less susceptible to such biases. Neuroscientific evidence shows that deception can evoke characteristic ERP differences. However, the cerebral processes involved in faking an IAT are still unknown. We randomly assigned 20 university students (15 females, 24.65 +/- 3.50 years of age) to a counterbalanced repeated-measurements design, requesting them to complete a Brief-IAT (BIAT) on attitudes toward doping without deception instruction, and with the instruction to fake positive and negative doping attitudes. Cerebral activity during BIAT completion was assessed using high-density EEG. Event-related potentials during faking revealed enhanced frontal and reduced occipital negativity, starting around 150 ms after stimulus presentation. Further, a decrease in the P300 and LPP components was observed. Source analyses showed enhanced activity in theDirect assessment of attitudes toward socially sensitive topics can be affected by deception attempts. Reaction-time based indirect measures, such as the Implicit Association Test (IAT), are less susceptible to such biases. Neuroscientific evidence shows that deception can evoke characteristic ERP differences. However, the cerebral processes involved in faking an IAT are still unknown. We randomly assigned 20 university students (15 females, 24.65 +/- 3.50 years of age) to a counterbalanced repeated-measurements design, requesting them to complete a Brief-IAT (BIAT) on attitudes toward doping without deception instruction, and with the instruction to fake positive and negative doping attitudes. Cerebral activity during BIAT completion was assessed using high-density EEG. Event-related potentials during faking revealed enhanced frontal and reduced occipital negativity, starting around 150 ms after stimulus presentation. Further, a decrease in the P300 and LPP components was observed. Source analyses showed enhanced activity in the right inferior frontal gyrus between 150 and 200 ms during faking, thought to reflect the suppression of automatic responses. Further, more activity was found for faking in the bilateral middle occipital gyri and the bilateral temporoparietal junction. Results indicate that faking reaction-time based tests alter brain processes from early stages of processing and reveal the cortical sources of the effects. Analyzing the EEG helps to uncover response patterns in indirect attitude tests and broadens our understanding of the neural processes involved in such faking. This knowledge might be useful for uncovering faking in socially sensitive contexts, where attitudes are likely to be concealed.show moreshow less

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Metadaten
Author details:Sebastian SchindlerORCiDGND, Wanja WolffORCiDGND, Johanna M. Kissler, Ralf BrandORCiDGND
URN:urn:nbn:de:kobv:517-opus4-406251
Title of parent work (English):Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
Subtitle (English):evidence from a brief implicit association test on doping attitudes
Publication series (Volume number):Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe (419)
Publication type:Postprint
Language:English
Date of first publication:2018/05/25
Publication year:2015
Publishing institution:Universität Potsdam
Release date:2018/05/25
Tag:EEG/ERP; anti-doping; deception; faking; implicit association test (IAT); indirect tests; right inferior frontal gyrus
Issue:419
Number of pages:13
Source:Frontiers in Behavioral Neuroscience 9 (2015) Art. 139, pp. 1–13 DOI: 10.3389/fnbeh.2015.00139
Organizational units:Humanwissenschaftliche Fakultät
DDC classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Peer review:Referiert
Publishing method:Open Access
Grantor:Frontiers
License (German):License LogoCC-BY - Namensnennung 4.0 International
External remark:Bibliographieeintrag der Originalveröffentlichung/Quelle
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