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Clinical Manifestations.

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Summary
This summary is machine-generated.

The CCAB-Español vocabulary test accurately measures premorbid verbal intelligence in Spanish speakers. This new test is a strong predictor of cognitive performance, similar to its English counterpart.

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Area of Science:

  • Neuropsychology
  • Cognitive Psychology
  • Linguistics

Background:

  • Vocabulary tests are crucial for assessing premorbid verbal intelligence.
  • Vocabulary scores are more predictive of cognitive performance than education.
  • The California Cognitive Assessment Battery (CCAB) has an English vocabulary test.

Purpose of the Study:

  • To develop an equivalent Spanish-language vocabulary test for the CCAB (CCAB-Español).
  • To ensure the test is linguistically, dialectally, and culturally relevant for diverse Spanish-speaking populations.
  • To validate the CCAB-Español vocabulary test's predictive power for cognitive performance.

Main Methods:

  • Adapted the English CCAB vocabulary test for Spanish, ensuring cultural and dialectal relevance.
  • Developed a 300-word test across 48 difficulty levels with adaptive staircase methodology.
  • Cross-referenced word frequency and dialectal data using CORPES XXI 2021 and Corpus del Español databases.

Main Results:

  • The CCAB-Español vocabulary test was administered to 108 participants (ages 18-79) with diverse linguistic backgrounds.
  • Test instructions were delivered in Mexican dialect text-to-speech.
  • Preliminary data shows the CCAB-Español vocabulary test is a strong predictor of overall performance on the Spanish battery.

Conclusions:

  • Vocabulary remains a key indicator of premorbid intelligence, outperforming education as a predictor.
  • The CCAB-Español vocabulary test design accounts for linguistic and dialectal variations.
  • The test demonstrates broad applicability across various Spanish-speaking regions.