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Published on: September 20, 2018
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Clinical Manifestations
Isabella Jaramillo1, Kathleen Hall1, Lourdes Anllo-Vento2
1Neurobehavioral Systems, Inc, Berkeley, CA, USA.
Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 26, 2025
Summary
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.
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.
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