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Negative sentences exhibit a sustained effect in delayed verification tasks.

Galit Agmon1, Yonatan Loewenstein1, Yosef Grodzinsky1

  • 1The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|March 7, 2022
PubMed
Summary
This summary is machine-generated.

Negated sentences require more cognitive effort due to a polarity effect. This effect persists even with ample processing time, suggesting negation impacts working memory.

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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics

Background:

  • Negated sentences are known to be more cognitively taxing than positive ones, a phenomenon termed the polarity effect.
  • The polarity effect in sentence verification tasks is attributed to both sentence processing and truth value verification.

Purpose of the Study:

  • To investigate the distinct contributions of sentence processing and verification to the polarity effect.
  • To determine if the polarity effect can be mitigated by providing extended processing time before verification.

Main Methods:

  • A delayed verification task was employed to separate sentence processing from verification.
  • Participants were given extended time to process sentences before verifying their truth value.

Main Results:

  • The polarity effect was not entirely eliminated even with a considerable delay between sentence processing and verification.
  • This indicates that negation continues to influence cognitive load beyond initial processing.

Conclusions:

  • The sustained polarity effect suggests that negation-containing representations are retained in working memory.
  • Cognitive load associated with negation is not solely due to initial processing but also involves persistent memory representation.