By What Age Should You Develop an 'English Ear'? Latest Research on the Critical Period

Many of you have likely heard that it is better to start learning English early.
However, if asked what the ideal age to start is, it might be difficult to give a clear answer.

In linguistics, there is a well-known concept called the 'Critical Period Hypothesis.' This theory suggests that the human brain has a period during which it is easier to acquire language naturally, and that the way we learn changes after that period passes.

A large-scale study published by the Massachusetts Institute of Technology in 2018 indicated that the period during which it is easiest to acquire grammar at a level close to that of a native speaker is up to about age 10, and that for listening and pronunciation, the ages of 6 to 7 are a major turning point.

What we want to focus on here is the ability known as an 'English ear.'

An English ear is the ability to accurately distinguish and reproduce the unique sounds of English.
It is believed that this ability is easier to develop by being exposed to many English sounds by the time a child is in the lower grades of elementary school.

For example, Japanese does not have a clear distinction between 'R' and 'L.' As a result, many people find it difficult to distinguish between 'rice' and 'lice' after they become adults.

In fact, babies up to about six months old have the ability to distinguish the sounds of languages from all over the world. However, by the time they are around one year old, their response to sounds not used in their daily lives gradually weakens.

In other words, sounds that you cannot hear are likely to affect your subsequent pronunciation.

Conversely, if you listen to many English sounds while you are young, the patterns of those sounds will naturally accumulate in your brain.

Some of you might feel that it is already too late.

But there is no need to worry.

The critical period is not a wall that says 'it's over once you pass it,' but rather a concept that 'there is a period when it is easier to absorb.' It just means that the earlier you start, the more naturally it enters, but you can still improve significantly afterward.

In fact, children who start at age 3 often show very natural growth in pronunciation, but even if they start at age 8, they can still develop clear pronunciation if they are exposed to English continuously.

The difference is not in 'what you can or cannot do,' but in the 'speed at which you acquire it.'

What is important is not just starting early, but continuing after you have started.

Listen to English, speak it, and respond to it, even if only a little bit every day.
This accumulation is what develops your ear.

And there is one more major strength unique to the early years.

Young children have almost no awareness that they are 'studying English.' They naturally absorb the language while playing with their teachers.

Because they do not think like adults—worrying about 'what if I make a mistake' or 'it's embarrassing if my pronunciation is weird'—they have a very high ability to imitate sounds exactly as they are.

This ability to 'speak out without hesitation' is actually a very powerful learning skill.

I am sometimes asked, 'My child is already 7 years old; is it too late?'

The answer is, of course, it is not too late.

However, today offers a little more time for that child to absorb things naturally than tomorrow does.

English is something that builds up little by little from the day you start.
Rather than worrying too much about age, it is important to first create time to be exposed to English in daily life.

Even in actual lessons, the changes that appear at each age are quite different. If you would like to know more about how to learn and how to progress, please take a look at the philosophy we value in our classroom.