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The first year of life A new-born baby can see, hear and feel. By the...
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The first year of life
A new-born baby can see, hear and feel. By the age of five, a child can talk, ride a bike and invent imaginary friends. How does this development happen? We don’t understand the way language, thinking and planning develop very well. Now scientists are using new technology to ‘see’ into children’s brains. And they are discovering new information about the way a baby’s brain develops.
A study in 2010 showed that the experiences a child has in their first few years affect the development of the brain. It showed that children who received more attention often had higher IQs. The brain of a new-born baby has nearly a hundred billion neurons. This is the same number as an adult’s brain. As they grow, a baby receives information through the senses of sight, hearing, smell, taste and touch. This information creates connections between different parts of the brain. At the age of three, there are a hundred trillion connections.
One experiment looked at images of babies’ brains while they were listening to different sounds. The sounds were in different sequences. For example, one sequence was mu-ba-ba. This is the pattern ‘A-B-B’. Another sequence was mu-ba-ge. This is the pattern ‘A-B-C’. The images showed that the part of the brain responsible for speech was more active during ‘A-B-B’ patterns. This shows that babies can tell the difference between different patterns. This experiment is interesting because sequences of words are important to grammar and meaning. Compare two sentences with the same words in a different order: ‘John killed the bear’ is very different from ‘The bear killed John.’ So babies are starting to learn grammatical rules from the beginning of life.
Researchers also know
that babies need to hear a lot of language in order to understand grammar
rules. But there is a big difference between listening to television, audio
books or the internet, and interacting with people. One study compared two
groups of nine-month-old American babies. One group watched videos of Mandarin
Chinese sounds. In the other group, people spoke the same sounds to the babies.
The test results showed that the second group could recognise different sounds,
however the first group learned nothing. The scientist, Patricia Kuhl, said
this result was very surprising. It suggests that social experience is
essential to successful brain development in babies.
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