title: Uninstructed BIAT faking when ego depleted or in normal state: differential effect on brain and behavior.
abstract: Deception can distort psychological tests on socially sensitive topics. Understanding the cerebral processes that are involved in such faking can be useful in detection and prevention of deception. Previous research shows that faking a brief implicit association test (BIAT) evokes a characteristic ERP response. It is not yet known whether temporarily available self-control resources moderate this response. We randomly assigned 22 participants (15 females, 24.23 ± 2.91 years old) to a counterbalanced repeated-measurements design. Participants first completed a Brief-IAT (BIAT) on doping attitudes as a baseline measure and were then instructed to fake a negative doping attitude both when self-control resources were depleted and non-depleted. Cerebral activity during BIAT performance was assessed using high-density EEG.
  
  
  
  Compared to the baseline BIAT, event-related potentials showed a first interaction at the parietal P1, while significant post hoc differences were found only at the later occurring late positive potential. Here, significantly decreased amplitudes were recorded for 'normal' faking, but not in the depletion condition. In source space, enhanced activity was found for 'normal' faking in the bilateral temporoparietal junction. Behaviorally, participants were successful in faking the BIAT successfully in both conditions.
  
  
  
  Results indicate that temporarily available self-control resources do not affect overt faking success on a BIAT. However, differences were found on an electrophysiological level. This indicates that while on a phenotypical level self-control resources play a negligible role in deliberate test faking the underlying cerebral processes are markedly different.
authors.affiliation: Department of Sport Science - Section Sport Psychology, University of Konstanz, Universitätsstr. 10, 78457, Constance, Germany.|Sport and Exercise Psychology, University of Potsdam, Im Neuen Palais 10, 14469, Potsdam, Germany.
authors.forename: Wanja
authors.initials: W
authors.lastname: Wolff
authors.affiliation: Department of Psychology, University of Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany. sebastian.schindler@uni-bielefeld.de.|Center of Excellence Cognitive Interaction Technology (CITEC), University of Bielefeld, Inspiration 1, 33619, Bielefeld, Germany. sebastian.schindler@uni-bielefeld.de.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Schindler
authors.affiliation: Department of Educational Psychology, University of Bern, Fabrikstr. 8, 3012, Bern, Switzerland.
authors.forename: Christoph
authors.initials: C
authors.lastname: Englert
authors.affiliation: Sport and Exercise Psychology, University of Potsdam, Im Neuen Palais 10, 14469, Potsdam, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Brand
authors.affiliation: Department of Psychology, University of Bielefeld, Universitätsstr. 25, 33615, Bielefeld, Germany.|Center of Excellence Cognitive Interaction Technology (CITEC), University of Bielefeld, Inspiration 1, 33619, Bielefeld, Germany.
authors.forename: Johanna
authors.initials: J
authors.lastname: Kissler
mesh_terms: D000328:Adult; D001244:Association; D001290:Attitude; D001294:Attitude to Health; D001921:Brain / Q000502:physiology*; D008192:Deception; D004532:Ego; D004569:Electroencephalography; D005071:Evoked Potentials; D056344:Executive Function / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D011581:Psychological Tests; D011930:Reaction Time; D000068356:Self-Control; D012815:Signal Processing, Computer-Assisted; D019966:Substance-Related Disorders; D055815:Young Adult
keywords: Cognitive control; Deception; EEG/ERP; Ego depletion; Faking; Implicit association test (IAT)