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Related Experiment Videos

Negative evidence in language acquisition

G F Marcus1

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139.

Cognition
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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Children do not need "negative evidence" to learn language. Internal mechanisms, not parental feedback, are essential for unlearning grammatical errors in child language acquisition.

Area of Science:

  • Psycholinguistics
  • Developmental Psychology
  • Computational Linguistics

Background:

  • Language acquisition is complex, with a central debate on whether children need explicit negative evidence to correct ungrammatical utterances.
  • Children must possess internal mechanisms to unlearn grammatical errors if negative evidence is unavailable.
  • Recent studies suggest parents provide 'noisy feedback' based on utterance grammaticality, but its utility is debated.

Purpose of the Study:

  • To investigate the necessity and efficacy of noisy feedback in child language acquisition.
  • To determine if noisy feedback is a viable mechanism for children to eliminate ungrammatical utterances.
  • To explore alternative explanations for unlearning grammatical errors, such as internal cognitive processes.

Main Methods:

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  • Analysis of existing literature and theoretical arguments regarding negative evidence and noisy feedback.
  • Quantitative assessment of the statistical power of noisy feedback for error detection.
  • Examination of the consistency and universality of noisy feedback across different ages and error types.

Main Results:

  • Noisy feedback, if it exists, is statistically too weak to be effective for language learning.
  • Parental feedback patterns may be artifacts of utterance grammaticality, not reliable negative evidence.
  • Noisy feedback is not consistently provided across all children, ages, or error types.

Conclusions:

  • Noisy feedback is unlikely to be necessary or sufficient for children to unlearn ungrammatical utterances.
  • Internal cognitive mechanisms are crucial for language acquisition and error correction.
  • The concept of negative evidence in language acquisition requires re-evaluation.