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Related Concept Videos

Language and Cognition01:27

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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
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Related Experiment Video

Updated: Jul 5, 2026

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
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[Letter fluency: psychometric properties and Dutch normative data].

B Schmand1, S C Groenink, M van den Dungen

  • 1Universiteit van Amsterdam, Programmagroep Psychonomie en Academisch Medisch Centrum, Afdeling Neurologie. b.schmand@amc.uva.nl

Tijdschrift Voor Gerontologie En Geriatrie
|May 27, 2008
PubMed
Summary

This study provides normative data for the Dutch Controlled Oral Word Association Test (COWAT), a letter fluency task crucial for assessing executive functioning in neuropsychology.

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Area of Science:

  • Neuropsychology
  • Cognitive Psychology
  • Psychometrics

Context:

  • The Controlled Oral Word Association Test (COWAT) is a widely utilized letter-fluency task in clinical neuropsychology.
  • Executive functioning, particularly verbal fluency, is a key area of cognitive assessment.
  • Establishing normative data is essential for accurate interpretation of test results.

Purpose:

  • To collect normative data for a Dutch version of the COWAT in healthy adults.
  • To evaluate the psychometric properties of the Dutch COWAT.
  • To provide a regression formula for correcting scores based on education level.

Summary:

  • Normative data were gathered from 200 healthy Dutch subjects aged 17-89 for the COWAT, a letter-fluency measure of executive function.
  • The Dutch COWAT demonstrated psychometric properties comparable to the original version, with a reliability of 0.80.
  • Scores correlated significantly with education and vocabulary, but not age or gender; a regression formula for educational correction is provided.

Impact:

  • Facilitates accurate neuropsychological assessment of verbal fluency in Dutch-speaking populations.
  • Enhances the clinical utility of the COWAT by providing standardized interpretation guidelines.
  • Supports research on executive functions and their relationship with demographic factors in the Netherlands.