Are you raising a bilingual child? Scientists have more good news…

Children who speak two languages have even more of a cognitive advantage than was previously thought.

Brand new findings from New York University's school of culture, education, and human development have shown that bilingual children process voice information quicker than kids who only speak one language. The research, published in the journal Bilingualism: Language and Cognition, suggests yet another advantage of speaking multiple languages beyond the already well-known cognitive benefits. The study's author Susannah Levi, a professor of communicative sciences and disorders at NYU, explains that bilingual children are better than their monolingual peers at perceiving information about who is talking, including recognising voices:

"Bilingual children have a perceptual advantage when processing information about a talker's voice. This advantage exists in the social aspect of speech perception, where the focus is not on processing the linguistic information, but instead on processing information about who is talking. Speech simultaneously carries information about what is being said and who is saying it."

Processing who is talking is an important social component of communication and begins to develop even before birth. In the study, Professor Levi examined how children process information about who is talking and sought to understand whether differences existed between children speaking one language or multiple languages. Forty-one children participated in the study, a combination of 22 monolingual English speakers and 19 bilingual children. The bilingual children all spoke English and either spoke or were exposed to a second language on a daily basis. The children were divided by age into two groups: nine years and younger and ten years and older. The children completed a series of tasks listening to different voices. In one, they listened to pairs of words in a language they knew (English, spoken with a German accent) and an unfamiliar language (German). The children were then asked whether a pair of words was spoken by the same person or two different people. In another task, the children learned to identify the voices of three speakers represented by cartoon characters on a computer screen. After listening to the cartoon characters say a series of words, the participants heard a word and would have to decide which cartoon character spoke it. The tasks revealed that older children performed better than younger children, confirming previous studies that perceiving information about who is talking improves with age. Professor Levi also found that bilingual children performed better than monolingual children in recognising and processing voices speaking in both English and German. When listening to English, bilingual children were better at discriminating and learning to identify voices. They were also faster at learning voices. When hearing German, bilingual children were better at discriminating voices.

"The study is a strong test of the benefits of bilingualism because it looked for differences in both a language familiar to all participants and one unfamiliar to them. The bilingual advantage occurred even in a language that was unfamiliar."

The professor says that there are several possible explanations for the bilingual advantage. Bilingual children may have more experience listening to accented speech (as the English was spoken with an accent) and multiple languages, may have better cognitive control and focus for the tasks, or may have better social perception - an important tool for perceiving voices.

"While we need more research to explain why bilingual children are better and faster at learning different voices, our study provides yet another example of the benefits of speaking and understanding multiple languages."