Journal
PSYCHOLOGICAL SCIENCE
Volume 20, Issue 9, Pages 1092-1099Publisher
SAGE PUBLICATIONS INC
DOI: 10.1111/j.1467-9280.2009.02411.x
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How does the brain respond to statements that clash with a person's value system? We recorded event-related brain potentials while respondents from contrasting political-ethical backgrounds completed an attitude survey on drugs, medical ethics, social conduct, and other issues. Our results show that value-based disagreement is unlocked by language extremely rapidly, within 200 to 250 ms after the first word that indicates a clash with the reader's value system (e.g., I think euthanasia is an acceptable/unacceptable...). Furthermore, strong disagreement rapidly influences the ongoing analysis of meaning, which indicates that even very early processes in language comprehension are sensitive to a person's value system. Our results testify to rapid reciprocal links between neural systems for language and for valuation.
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