.png){kind=icon}
.png){kind=icon}
Return
Validity and reliability of the RAT (Resim Adlandırma Testi): a picture naming test developed for Turkish-speaking individuals with aphasia
.png){kind=icon}
PRE
AI
B
A
DOI：10.1080/02687038.2026.2638232.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Background People with aphasia (PWA) have varying degrees of language impairment with anomia being among the most prominently affected components. Anomia is generally assessed using picture naming tests. However, to date, no comprehensive naming test has been developed that accounts for the psycholinguistic variables, linguistic structures, and cultural characteristics specific to Turkish. Aims This study aimed to evaluate the reliability and validity of the RAT (Resim Adland & imath;rma Testi), an original confrontation naming test developed for Turkish-speaking PWA, incorporating systematic psycholinguistic control and refined through pilot testing. Methods & Procedures RAT was administered to 247 healthy controls (HC) and 35 PWA. Participants were divided into four age groups (<50, 50-59, 60-69, >= 70 years) and two education groups (1-8 and >= 9 years). Construct validity was evaluated using Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), item analysis and independent samples t-tests. Criterion validity was assessed by comparing RAT scores with the Naming subtest of the Afazi Dil De & gbreve;erlendirme Testi (ADD). Additionally, an exploratory cut-off score of 44 for the RAT was established using Receiver Operating Characteristic (ROC) analysis. Reliability was examined via internal consistency metrics (Cronbach's alpha and split-half reliability), inter-rater reliability, and test administration consistency. The effects of demographic variables (age, education, and gender) on test performance in both groups, as well as the frequency of naming errors by aphasia type, were also examined. Outcomes & Results Based on the EFA, five items with low factor loadings were excluded from the final version of the test. The remaining items showed a clear unidimensional factor structure. CFA results further confirmed this structure, with multiple indices demonstrating an acceptable model fit. Item analysis revealed that all items were internally consistent and effectively discriminated between levels of naming ability. RAT scores successfully distinguished between the HC and PWA groups. The results of the RAT and ADD Naming Subtest were highly correlated. The RAT scores decreased significantly in those over 70 years of age in both groups. While higher educational levels were associated with significantly higher test scores in HC, education level did not significantly influence performance in PWA. Gender did not have a significant effect on test scores in either group. Overall, there was no clear relationship between the frequency of naming errors within fluent and non-fluent aphasia groups. Conclusions The RAT is a valid, reliable, and valuable tool for the detailed assessment of naming abilities in Turkish-speaking PWA.
Keywords:
Anomia
aphasia
naming
reliability
validity
Journal
IF:
2.1
Papers:
253
Citations:
4.4K
Organization
Cited Papers