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Related Experiment Videos

Changes in activation levels with negation.

M C MacDonald1, M A Just

  • 1Carnegie Mellon University.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|July 1, 1989
PubMed
Summary
This summary is machine-generated.

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Negation, like "no bread," impacts how quickly we process words. This study shows negation affects mental activation of nouns during language processing.

Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Neuroscience

Background:

  • Understanding how the human brain processes language is crucial.
  • Negation presents a unique challenge in language comprehension.
  • Previous research has explored the cognitive load associated with negation.

Purpose of the Study:

  • To investigate the cognitive effects of negation on noun processing during real-time language comprehension.
  • To determine if negating a noun phrase affects the mental activation of that noun.
  • To explore the scope of negation's influence on related concepts.

Main Methods:

  • Three experiments were conducted using on-line language processing tasks.
  • Experiment 1 used a probe recognition task, manipulating negation placement.

Related Experiment Videos

  • Experiments 2 and 3 employed probe naming tasks, including associate probes.

    • Main Results:

    • Participants were slower to recognize probes corresponding to negated nouns.
    • This inhibition effect was replicated across probe recognition and naming tasks.
    • No inhibition was observed for associate probes (e.g., 'butter' after 'no bread').

    Conclusions:

    • Negation significantly affects the activation level of a noun's mental representation.
    • The impact of negation is specific to the negated noun phrase, not its associates.
    • Negation influences the discourse focus of noun phrases, altering cognitive processing.