Revista Neurociências · Jun 4, 2026
Reliability of the Digital Trail Making Test in assessing cognitive function in older adults – Pilot study
By de Souza MCB, Prado LRBD, Severo BG et al.
Introduction. The rapid global population aging (currently 9.1% aged 65+ years, projected to reach 16% by 2050) demands innovative instruments for cognitive assessment in older adults. The Trail Making Test (TMT) evaluates cognitive functions such as mental flexibility, sustained attention, and visuomotor skills, and has been adapted into digital versions. Objective. To verify the reliability of a digital version of the TMT, in assessing the cognitive function of older adults, as well as to identify potential weaknesses for the development of a new instrument. Method. A cross-sectional methodological study with 15 older adults (60+ years, MMSE >24) recruited in Santa Rita do Sapucaí-MG. The digital TMT was administered in test-retest format with a 7-day interval, analyzing time and errors assessed by two independent evaluators. Data were analyzed using SPSS V20.0 (non-parametric tests; α=5%). Results. The sample (60% female, mean age=64.9±4.1 years) showed: For errors, a moderate and significant positive correlation between evaluators during testing (CC=0.62; p=0.01). For time, a strong and significant positive correlation between evaluators during retesting (CC=0.79; p=0.00). Other data showed weak positive correlations. A mean 20.5% reduction in execution time was observed during retesting (p<0.001), indicating a practice effect. Conclusion. The preliminary results of this pilot study indicate that the digital version of the TMT is feasible and shows initial evidence of reliability; however, it requires interface adjustments, particularly regarding real-time feedback.