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Language evolution shows irregular verbs becoming regular over time. Less frequent verbs regularize faster, with a square root relationship to usage frequency.

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Area of Science:

  • Linguistics
  • Computational Linguistics
  • Evolutionary Biology

Background:

  • Human language grammar evolves culturally over time.
  • English verbs have undergone significant changes in past tense formation over 1,200 years.
  • Proto-Germanic ancestors had complex verb conjugations, unlike Modern English's '-ed' suffix.

Observation:

  • A dataset of 177 Old English irregular verbs was analyzed for changes over a millennium.
  • 145 of these verbs remained irregular in Middle English, with 98 still irregular today.
  • The study quantifies the rate of verb regularization based on word usage frequency.

Findings:

  • The rate of regularization for irregular verbs is inversely proportional to their usage frequency.
  • The half-life of an irregular verb scales with the square root of its usage frequency.
  • Less frequent verbs regularize approximately 10 times faster than verbs 100 times more frequent.

Implications:

  • This research provides a quantitative model for understanding language change and grammatical rule evolution.
  • The findings demonstrate a predictable pattern in the decay of exceptions within language.
  • The study highlights the role of usage frequency in linguistic regularization and the survival of grammatical forms.