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A delay in processing for repeated letters: Evidence from megastudies.

Iliyana V Trifonova1, James S Adelman1

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Cognition
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Repeated letters in words slow down visual word recognition, particularly when close together but not adjacent. This finding challenges current word recognition models.

Keywords:
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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Computational Linguistics

Background:

  • Letter repetitions are common in language.
  • Previous research on letter repetition's effect on word recognition yielded inconclusive results.
  • Existing models of visual word recognition do not fully account for repetition effects.

Purpose of the Study:

  • To investigate the impact of repeated letters on visual word recognition.
  • To provide stronger evidence by analyzing large-scale datasets.
  • To test the predictive power of current models against observed effects.

Main Methods:

  • Utilized regression analyses on existing visual word recognition latency data.
  • Analyzed data from lexical decision tasks (English, Dutch, French) and word naming tasks (English).
  • Conducted simulations to compare findings with leading visual word recognition models.

Main Results:

  • Found significant evidence that repeated letters delay visual word recognition, even after controlling for other factors.
  • The delay was most pronounced when repeated letters were in close proximity, but not directly adjacent.
  • Simulations showed that three major visual word recognition models failed to predict this inhibitory pattern.

Conclusions:

  • Repeated letters exert an inhibitory effect on visual word recognition.
  • Current models of visual word recognition require revision to incorporate this finding.
  • Further research is needed to determine if the effect stems from letter representation or earlier visual processing stages.