The effect of bilingualism on cognitive and auditory abilities in normally hearing adults

ABSTRACT Purpose: to evaluate and compare cognitive and auditory abilities in normally hearing monolingual and bilingual individuals. Methods: the sample consisted of 21 normally hearing individuals ranging in age between 18 and 25 years, divided into a control group of eight monolingual speakers of Brazilian Portuguese and a study group composed of 13 bilingual speakers of Brazilian Portuguese and German or Italian. The individuals underwent basic audiological assessments as well as assessments of cognitive and auditory figure-background abilities with the BPR-5 and SSW tests, respectively. Results: the assessment of cognitive abilities showed that bilinguals had a better performance for the general cognitive function, with a statistically significant difference, as well as for cognitive abilities of verbal, spatial and mechanical reasoning. Also, for auditory figure-background abilities, there was a statistically significant difference between the study groups, with bilinguals showing a better performance. Conclusions: based on the study groups, it was found that the bilingual subjects had a better performance of their general cognitive function, as compared with monolingual speakers, as well as in their specific cognitive abilities of verbal, spatial and mechanical reasoning, and in the auditory figure-background abilities.