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Electrophysiological Precursor of Information Cascade: Evidence from N200

Author

Listed:
  • Li, Jianbiao
  • Niu, Xiaofei
  • Zhu, Chengkang
  • Wang, Guangrong
  • Cao, Qian
  • Li, Shuaiqi
  • Liu, Xiaoli
  • Wang, Pengcheng

Abstract

When a sequence of decision makers with private information announce public predictions, initial conformity can create an information cascade in which all future decision makers will rationally match the early announcements and disregard private information. This study uses event-related potentials (ERPs) to compare the time course of neural activities associated with information cascade during sequential decision-making. In our experiment, a participant receives a private signal matched with public information in the congruent condition, while in the incongruent condition he or she receives a private signal against the public information. The results show that the conflict between private and public information triggers a more negative deflection peaking around 300 ms, with a right frontal scalp distribution similar to N200. Importantly, the N200 effect is negatively correlated with information cascade. These results add to the growing literature on neuronal mechanisms of information cascades by disentangling cognitive control related processes in inhibiting overweighting private information and the neural signal of a cascade in sequential decision-making.

Suggested Citation

  • Li, Jianbiao & Niu, Xiaofei & Zhu, Chengkang & Wang, Guangrong & Cao, Qian & Li, Shuaiqi & Liu, Xiaoli & Wang, Pengcheng, 2018. "Electrophysiological Precursor of Information Cascade: Evidence from N200," EconStor Preprints 179426, ZBW - Leibniz Information Centre for Economics.
  • Handle: RePEc:zbw:esprep:179426
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    References listed on IDEAS

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    Keywords

    information cascade; N200; cognitive control; ERPs;
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