Validation of the Turkish Version of the DDQ-30: Norms and Clinical Utility for Detecting Lexical-Semantic Impairments
Archives of Clinical Neuropsychology, cilt.41, sa.1, 2026 (SCI-Expanded, SSCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 41 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1093/arclin/acaf093
- Dergi Adı: Archives of Clinical Neuropsychology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus, EMBASE, MEDLINE, Psycinfo, Academic Search Ultimate (EBSCO), Biomedical Reference Collection: Corporate Edition (EBSCO)
- Anahtar Kelimeler: Alzheimer’s disease, Anomia, Assessment, Auditory naming, Lexical-semantic processing, Mild cognitive impairment, Normative data
- İstanbul Kent Üniversitesi Adresli: Hayır
Özet
Objective This study adapted the Definition-based Naming Test (DDQ-30) into Turkish (DDQ-30 TR) and assessed its psychometric properties. Method The adaptation process included translation, cultural and linguistic modifications, expert review, and pilot testing. Normative data were collected from 357 cognitively healthy Turkish adults aged 50–79. Known-group discriminant validity was examined in 150 participants, including healthy controls (n=50), individuals with mild cognitive impairment (MCI; n=60), and Alzheimer’s disease (ad; n=40). Results DDQ-30 TR performance declined with age and improved with education. Norms were stratified by age, education, and sex. The test showed strong group validity (HC>MCI>ad) and acceptable reliability (α=0.758). Conclusions The DDQ-30 TR is a reliable, culturally adapted auditory naming tool that enables lexical-semantic assessment in Turkish-speaking older adults, particularly those with visual limitations. The DDQ-30 TR can be used as a supportive instrument within broader clinical screening protocols for neurocognitive disorders, especially among individuals with visual limitations.