Simplified assessment of central auditory processing in individuals presented with trisomy 21

Abstract

Purpose: to analyze the performance of individuals with trisomy 21 (T21) in the simplified assessment of central auditory processing, identify the impaired skills, and compare it with the results of the hearing self-perception questionnaire administered to the parents. Methods: a descriptive, observational, quantitative study conducted at the Speech-Language-Hearing Teaching Clinic of a public university. The sample comprised 16 individuals with T21, aged 8 to 33 years. Simplified assessment tests of central auditory processing were conducted, namely, sounds localization and sequential memory for verbal and nonverbal sounds, diotically. Then, the Scale of Auditory Behaviors (SAB) was administered to the subjects’ parents/guardians. The descriptive statistical analysis with the chi-square test considered p<0.05. Results: in the simplified assessment, 81.3% had abnormal results in the memory tests for verbal sounds; 75%, in the memory tests for nonverbal sounds; and 37.5%, in the sound localization test. In the Scale of Auditory Behaviors, 62.5% of the answers indicated changes in the central auditory processing, demonstrating that the scale can be useful to identify such changes. However, there was no significant association between the questionnaire and the behavioral test results. Conclusion: the results point to impaired sequential memory skills for verbal and nonverbal sounds in most individuals assessed. The simplified assessment results indicate the need for assessments of central auditory processing. Hence, the simplified assessment is highly important to detect possible changes in the central auditory processing that might interfere with the communication and overall learning of individuals presented with trisomy 21.