Abstract
To compare the performance of the Dichotic Sentence Identification (DSI) test in the Brazilian Portuguese version, considering: the right and left ears and the educational status in normal-hearing individuals. This investigation assessed 200 individuals who are normal listeners and right-handed and were divided into seven groups according to the years of schooling. All the participants underwent basic audiologic evaluation and behavioral auditory processing assessment (sound localization test, memory test for verbal and nonverbal sounds in sequence, dichotic digits test, and DSI). The evaluated individuals revealed an average educational status of 13.1 years and results within normal limits in the selected tests for the audiologic and auditory processing assessments. Regarding the DSI test, the educational status showed a dependent relationship with the percentages of correct answers in each stage of the test and the evaluated ear. There was a statistically significant positive correlation between the educational status and the percentage of correct answers for all the stages of the DSI test in both the ears. There was also an effect of the educational level on the results obtained in each condition of the DSI test, with the exception of directed attention to the right ear. Comparing the performance considering the variables studied in the DSI test, we concluded that there is an advantage of the right ear and that, the better the educational level, the better the performance of the individuals.
Highlights
The behavioral evaluation of the auditory processing is carried out with special hearing tests designed to infer the performance of the individuals in adverse hearing situations
The studies made to investigate the central auditory skills identified that the hearing tests may be influenced by some factors, among which the peripheral hearing loss[2,3,4], age[3,4,5], educational status and cognitive resources[6], handedness[7], sustained attention skills[8], and linguistic processing stand out
The Dichotic Sentences Identification (DSI) test is a dichotic listening test of high redundancy and predictability, which was elaborated with the purpose of evaluating individuals with peripheral hearing loss
Summary
The behavioral evaluation of the auditory processing is carried out with special hearing tests designed to infer the performance of the individuals in adverse hearing situations. The studies made to investigate the central auditory skills identified that the hearing tests may be influenced by some factors, among which the peripheral hearing loss[2,3,4], age[3,4,5], educational status and cognitive resources[6], handedness[7], sustained attention skills[8], and linguistic processing stand out. The DSI test is a dichotic listening test of high redundancy and predictability, which was elaborated with the purpose of evaluating individuals with peripheral hearing loss. The DSI has three versions: English[2], Australian English[9], and Brazilian Portuguese[10]
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