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Related Experiment Videos

Reading words with irregular decoding rules: a test of premorbid cognitive function?

Ing-Mari Tallberg1, Klara Wenneborg, Ove Almkvist

  • 1CLINTEC Department, Division of Logopedics and Phoniatrics, Karolinska Insitutet, Sweden. ing-mari.tallberg@klinvet.ki.se

Scandinavian Journal of Psychology
|November 17, 2006
PubMed
Summary

Reading irregular words in Swedish, often loanwords, positively correlates with general cognitive function. This finding suggests irregular word reading performance may reflect overall cognitive ability and vocabulary exposure.

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Area of Science:

  • Cognitive Psychology
  • Linguistics
  • Neuroscience

Background:

  • Swedish is an orthographically regular language, making irregular words often loanwords.
  • Understanding factors influencing reading, especially of non-standard words, is crucial for cognitive assessment.

Purpose of the Study:

  • To investigate the relationship between general cognitive function and the oral reading of irregular words in Swedish.
  • To develop and validate a test for irregular word reading in Swedish adults.

Main Methods:

  • A test of irregular spelled words (ISW) was created.
  • 48 healthy Swedish adults, stratified by age, gender, and education, were tested.
  • Statistical analysis examined the correlation between ISW performance and cognitive function.

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Main Results:

  • A positive correlation was found between the ability to read irregular words and general cognitive level.
  • Irregularly spelled words (ISW) combined with demographic variables provided a robust estimate of cognitive function.
  • Demographic variables alone were less effective in estimating cognitive function compared to ISW performance.

Conclusions:

  • Oral reading of irregular words is a significant indicator of general cognitive function in Swedish adults.
  • ISW performance may serve as a proxy for lifelong exposure to written and spoken vocabulary.
  • Irregular word reading could represent a distinct cognitive factor contributing to overall cognitive ability.