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Bilingual babies learn languages faster than monolingual

Bilingual babies learn languages faster than monolingualSome parents may worry whether teaching their babies two languages concurrently will overburden their babies' minds, while some may wonder if babies get confused learning two very different languages from birth. These concerns are unfounded, according to the latest findings by psychologists from the National University of Singapore (NUS).

Led by Associate Professor Leher Singh from the Department of Psychology at the NUS Faculty of Arts and Social Sciences, the study -- which explored the learning of English and Mandarin -- suggested that learning two languages from the start helps children master the rules of each language faster. In fact, learning English and Mandarin concurrently accelerate the learning of Mandarin.

"Our results dispel commonly held beliefs about bilinguals being slower in learning words," said Assoc Prof Singh. "Parents need not worry that learning English will take away a child's potential to learn Mandarin as learning both languages may strengthen their knowledge of Mandarin."

The results were first published online in the journal Frontiers in Psychology in April 2016.

In Singapore, English and Mandarin are the two most commonly used languages, despite being very different from one another. In English, tones do not change the meaning of words, but in Mandarin, they do, leading to a potential conflict for bilingual learners.

Assoc Prof Singh and her team, which includes Ms Charlene Fu and Ms Felicia Poh from the Department, studied 72 babies who were between 12 to 13 months of age, when they are starting to learn new words. They compared the ability of the babies to recognise that tone changes the meaning of a word in Mandarin, but it is not relevant for words in English.

During the experiments, when English-Mandarin bilingual babies were spoken to in English, they ignored tone when learning new words, but when they were spoken to in Mandarin, they responded to tone changes when learning new words. However, monolingual Mandarin babies did not show mastery of the Mandarin tone system until six months later when spoken to in Mandarin, when they were around 18 months old. This suggests that the bilingual babies had already developed expertise in the Mandarin tone system whereas the Mandarin monolingual babies had not.

When new words were introduced to their vocabularies, the English-Mandarin bilingual children surpassed their Mandarin monolingual peers as they could learn words in each language more effectively. This dispels widely held beliefs that bilingual children learn words more slowly because they are processing two languages.

The NUS team also made interesting findings in relation to the development of language skills in babies. The babies involved in the study were aged between 12 to 13 months. Researchers discovered that although these babies were not speaking in words yet, they already know a lot about words in each of their languages if they are bilingual. This indicates that babies can navigate the rules of language, even when the rules conflict, and can use this information by the time they are 12 months of age to learn two different languages.

Explained Assoc Prof Singh, "Our findings show that more exposure to one language is not necessarily better for babies. What led to better performance in learning Mandarin was being raised bilingually, with exposure to both English and Mandarin, rather than solely to Mandarin. This is a novel finding, and the first study we know of that shows accelerated word learning in bilingual children, strongly suggesting that babies are not thwarted by learning two very different languages."

To further their understanding of language processes in monolingual and bilingual infants, Assoc Prof Singh and her team are conducting studies to look at how babies track words in speech, how they process sentences in each language, and how good they are in detecting errors in each language.

Concurrently, the team is conducting studies to investigate the social and moral judgments of bilingual and monolingual babies, to find out if bilingualism makes children more 'open minded' in the way they perceive people.
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