Monolingual and Bilingual Word Recognition and Word Learning in Background Noise.

The question of whether bilingualism leads to advantages or disadvantages in linguistic abilities has been debated for many years. It is unclear whether growing up with one versus two languages is related to variations in the ability to process speech in the presence of background noise. We present findings from a word recognition and a word learning task with monolingual and bilingual adults. Bilinguals appear to be less accurate than monolinguals at identifying familiar words in the presence of white noise. However, the bilingual "disadvantage" identified during word recognition is not present when listeners were asked to acquire novel word-object relations that were trained either in noise or in quiet. This work suggests that linguistic experience and the demands associated with the type of task both play a role in the ability for listeners to process speech in noise.