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Schiller B, Gianotti LRR, Baumgartner T, et al. Theta resting EEG in the right TPJ is associated with individual differences in implicit intergroup bias. Soc Cogn Affect Neurosci. 2019;14(3):281-289doi: 10.1093/scan/nsz007.
Schiller, B., Gianotti, L. R. R., Baumgartner, T., & Knoch, D. (2019). Theta resting EEG in the right TPJ is associated with individual differences in implicit intergroup bias. Social cognitive and affective neuroscience, 14(3), 281-289. https://doi.org/10.1093/scan/nsz007
Schiller, Bastian, et al. "Theta resting EEG in the right TPJ is associated with individual differences in implicit intergroup bias." Social cognitive and affective neuroscience vol. 14,3 (2019): 281-289. doi: https://doi.org/10.1093/scan/nsz007
Schiller B, Gianotti LRR, Baumgartner T, Knoch D. Theta resting EEG in the right TPJ is associated with individual differences in implicit intergroup bias. Soc Cogn Affect Neurosci. 2019 Mar 05;14(3):281-289. doi: 10.1093/scan/nsz007. PMID: 30690590; PMCID: PMC6399604.
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Soc Cogn Affect Neurosci. 2019 Mar 05;14(3):281-289. doi: 10.1093/scan/nsz007.

Theta resting EEG in the right TPJ is associated with individual differences in implicit intergroup bias.

Social cognitive and affective neuroscience

Bastian Schiller, Lorena R R Gianotti, Thomas Baumgartner, Daria Knoch

Affiliations

  1. Department of Psychology, Laboratory for Biological and Personality Psychology, University of Freiburg, Freiburg, Germany.
  2. Department of Psychology, Social and Affective Neuroscience, University of Basel, Basel, Switzerland.
  3. Freiburg Brain Imaging Center, University Medical Center, University of Freiburg, Freiburg, Germany.
  4. Institute of Psychology, Department of Social Psychology and Social Neuroscience, University of Bern, Bern, Switzerland.

PMID: 30690590 PMCID: PMC6399604 DOI: 10.1093/scan/nsz007

Abstract

Why are some people more biased than others in their implicit evaluations during social interaction? The dispositional determinants of individual differences in implicit intergroup bias are poorly understood. Here, we explored whether such variability might be explained by stable neural traits. For that purpose, we used the source-localized resting electroencephalograms of 83 members of naturalistic social groups to explain their bias in an in-/outgroup implicit association test. Lower levels of resting theta current density in the right temporo-parietal junction (TPJ) were associated with stronger implicit intergroup bias and explained unique variability in bias beyond relevant personality questionnaires. These findings demonstrate the added value of the neural trait approach in predicting inter-individual differences in implicit social cognition. Given that low levels of resting theta current density during wakefulness likely reflect increased cortical activation, our results suggest that individuals with an efficiently working right TPJ possess capacities to mediate specific cognitive processes that predispose them towards stronger implicit intergroup bias. As the human species has evolved living in distinct social groups, the capacity to quickly differentiate friend from foe became highly adaptive and might thus constitute an essential part of human nature.

© The Author(s) 2019. Published by Oxford University Press.

Keywords: implicit intergroup bias; individual differences; neural traits; resting EEG; right TPJ

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