Cross-linguistic adaptations of The Comprehensive Aphasia Test: Challenges and solutions

Area of Science:

• Neurolinguistics
• Speech-Language Pathology
• Psycholinguistics

Background:

• Comparative aphasia research is hindered by a lack of standardized, cross-linguistic assessment tools.
• Existing tools are often direct translations, failing to account for language-specific linguistic and psycholinguistic features.
• The Comprehensive Aphasia Test (CAT) is being adapted into multiple European languages to address this gap.

Purpose of the Study:

• To identify and propose solutions for key challenges in adapting the CAT for cross-linguistic comparability.
• To ensure the adapted assessment tools are linguistically and culturally equivalent to the original.
• To facilitate more robust and comparable research in aphasia and aphasia rehabilitation globally.

Main Methods:

• Focus on adaptation challenges related to linguistic properties of testing material.
• Analysis of factors including imageability, word frequency, word length, and spelling-to-sound regularity.
• Consideration of sentence length and complexity in material selection for diverse languages.

Main Results:

• Identified critical linguistic and psycholinguistic parameters influencing test item selection.
• Developed strategies to ensure translated items maintain psychometric properties relevant to the target language.
• Proposed solutions for creating linguistically and culturally equivalent assessment materials.

Conclusions:

• Successful adaptation of the Comprehensive Aphasia Test requires careful consideration of language-specific parameters.
• Addressing challenges in material selection is vital for creating equivalent and comparable aphasia assessment tools.
• This work is a significant step towards enabling standardized cross-linguistic aphasia research and rehabilitation.