Developing Azeri aphasia screening test and preliminary validity and reliability
Sousan Salehi1, Ali Jahan2, Najva Mousavi3
1Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
Iranian Journal of Neurology
|April 25, 2017
Summary
Researchers developed a new aphasia screening test for Azeri speakers. This validated tool assesses language impairments in individuals with brain injuries, offering clinical utility.
Area of Science:
- Neurolinguistics
- Psychometrics
Background:
- Aphasia screening tools are lacking for the Azeri language.
- Developing a reliable and valid screening test is crucial for clinical practice.
Purpose of the Study:
- To develop and validate an aphasia screening test for Azeri speakers.
- To establish the psychometric properties of the newly developed test.
Main Methods:
- Literature review and expert panel review for test design and content validity.
- Test-retest reliability assessed in 32 brain-injured patients over two weeks.
- Psychometric analysis including Content Validity Ratio (CVR) and Cronbach's alpha.
Main Results:
- The developed test comprises eight subscales: picture description, syntax, linguistic reasoning, naming, minimal pairs perception, comprehensive vocabulary, expressive vocabulary, and verbal fluency.
- Content Validity Ratio (CVR) was 82%.
- High test-retest reliability (Intraclass Correlation > 0.8) and internal consistency (Cronbach's alpha = 0.901) were achieved.
Conclusions:
- The Azeri aphasia screening test demonstrates acceptable psychometric properties.
- The test is suitable for use by specialists in clinical settings for aphasia screening.
