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Related Experiment Videos

Sentence completion task in right-brain-damaged right-handers: Eisenson's study revisited

P Goulet1, Y Joanette

  • 1Laboratoire Théophile-Alajouanine, C.H. Côte-des-Neiges, Montréal, Canada.

Brain and Language
|February 1, 1994
PubMed
Summary

Right-brain-damaged patients struggle with sentence completion, particularly for abstract words. This difficulty was confirmed in a study comparing their performance to normal individuals.

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Area of Science:

  • Neuroscience
  • Psycholinguistics
  • Cognitive Psychology

Background:

  • Right-brain-damaged (RBD) individuals may exhibit specific linguistic deficits.
  • Eisenson's previous work suggested impairments in sentence completion for RBDs, especially with abstract vocabulary.

Purpose of the Study:

  • To investigate Eisenson's claim regarding sentence completion deficits in right-brain-damaged right-handers (RBDs).
  • To determine if RBDs are disproportionately impaired when completing sentences requiring abstract nouns.

Main Methods:

  • A sentence completion task was administered to 34 RBD patients and 19 healthy controls.
  • Sentences were designed to elicit either concrete or abstract noun completions.
  • Performance was analyzed considering both expected and adequate word responses.

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Main Results:

  • RBDs performed differently from controls on both concrete and abstract sentence completions when only exact matches were accepted.
  • Deficits in RBDs were primarily observed for abstract noun completions when adequate responses were allowed.
  • Approximately 50% of RBDs showed poorer performance than 95% of controls under the more lenient scoring condition.

Conclusions:

  • The study supports the hypothesis that right-brain damage can lead to specific difficulties in processing abstract language.
  • Sentence completion tasks, especially those involving abstract concepts, can reveal subtle linguistic impairments in RBD populations.
  • Factors like age, education, and lesion location did not fully explain the observed subgroup of underperforming RBD patients.