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Related Experiment Videos

Right hemisphere involvement in processing later-learned languages in multilinguals

D Wuillemin1, B Richardson, J Lynch

  • 1Monash University, Churchill, Victoria, Australia.

Brain and Language
|May 1, 1994
PubMed
Summary
This summary is machine-generated.

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Language laterality in multilingual individuals is significantly influenced by age of acquisition. Older learners show more right hemisphere engagement, supporting a critical period for language learning.

Area of Science:

  • Neuroscience
  • Psycholinguistics
  • Cognitive Science

Background:

  • Understanding cerebral lateralization for language is crucial in multilingual populations.
  • Factors influencing language laterality, such as age of acquisition and proficiency, require further investigation.

Purpose of the Study:

  • To investigate hemispheric laterality for English and Tok Pisin in multilingual Papua New Guinean subjects.
  • To determine the influence of age of acquisition, proficiency, mode of instruction, and duration of use on language laterality.

Main Methods:

  • Utilized a divided visual field technique to assess hemispheric involvement for two languages.
  • Examined various factors including age of acquisition, proficiency, and instructional methods.

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Main Results:

  • Age of acquisition was the sole significant factor influencing language laterality.
  • Older acquirers of both English and Tok Pisin exhibited greater right hemisphere activation compared to early acquirers.
  • Proficiency was also affected by acquisition age, with older English learners performing worse on language tests.

Conclusions:

  • The findings strongly suggest a critical period for language learning, evidenced by the impact of acquisition age on both cerebral lateralization and proficiency.
  • Age of acquisition plays a pivotal role in shaping how languages are processed in the brain.