Reliability, Validity, and Adaptation of Computerized Revised Token Test in Normal Subjects

Abstract

Introduction: The aim of the present study was to study adaptation, reliability, and validity characteristic of the Turkish version of Computerized Revised Token Test (CRTT) in normal subjects. CRTT is a diagnostic test used to evaluate the auditory processing abilities. T-CRTT consists of 10 subtests that require following commands and identifying and manipulating objects of standardized shapes, colors and sizes. Materials and Methods: The present study conducted at Hacettepe University Faculty of Medicine, E.N.T Department, Audiology and Speech Pathology Unit. For the reliability and validity analysis, 60 healthy subjects (28 men and 32 female) aged between 20 and 80 yrs were included in the study. Descriptive statistics of measurements were calculated as mean +/- SD. Cronbach's alpha coefficient was used to assess the internal consistency of the scales. Test-retest reliability was examined using Pearson correlation coefficient between first and second application of T-CRTT. In T-CRTT validity analysis, structural validation was thought to be useful. Results: All of the subjects' subtest's mean scores, overall scores and efficiency scores were calculated. Cronbach's coefficients for subtests mean scores and efficiency scores were calculated respectively as (0.77), and (0.76). Results of our test-retest results indicated good reliability except for Subtest 8. ICC and a score was respectively 0.828 (ICC), 0.906 (a) and 0.764 (ICC), 0.866 (a). For validity, sex and age correlations were evaluated and it was found that overall scores and efficiency scores were not affected with gender differences, but were affected with age factor. Conclusion: We believe that T-CRTT is a detailed and useful instrument for the evaluation of auditory processing inefficiencies and evaluation of suitable management programmes.