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First and second languages differentially affect rationality when making decisions: An ERP study.

Linyan Liu1, John W Schwieter2, Fenqi Wang3

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This summary is machine-generated.

Bilinguals

Keywords:
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Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Psycholinguistics

Background:

  • Decision-making processes are influenced by various factors, including language.
  • The impact of emotional valence and cognitive load on decision-making in bilinguals requires further investigation.

Purpose of the Study:

  • To investigate how first language (L1) and second language (L2) affect decision-making under emotional and cognitive load.
  • To explore the neural underpinnings of language-dependent decision-making.

Main Methods:

  • A cross-task study involving 30 Chinese-English bilinguals.
  • Lexical-semantic judgment and gambling tasks were employed.
  • Event-related potentials (ERPs), specifically P3, and Granger causality were analyzed.

Main Results:

  • Under high cognitive load, negative words elicited a more positive P3 in L1 compared to neutral words, while L2 showed the opposite pattern.
  • Increased P3 effect for negative words correlated with decreased decision rationality in L1 but increased rationality in L2.
  • Granger causal strength predicted more rational choices in the L2 under high cognitive load with negative stimuli.

Conclusions:

  • L1 and L2 differentially influence rational decision-making, particularly under emotional and cognitive load.
  • Language processing in bilinguals can modulate emotional responses and cognitive control during decision tasks.
  • Findings suggest distinct neural mechanisms underlying decision-making in L1 versus L2.