The Reason Why Learning New Language Is Difficult For Adult,- Why is it so hard to learn another language after childhood? A new study has found that it’s “nearly impossible” to reach native-level fluency if you start learning a second tongue after age 10. However, it doesn’t seem to be because language skills go downhill at age 10. You’re still learning fast, but you run out of time, since your ability to learn starts dropping at around age 17 or 18.

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Those who start a few years after 10 may still become quite good at a language, but are unlikely to reach total fluency. Possible explanations could include lifestyle changes related to entering the workforce or college. Or an unwillingness to learn new things – while looking foolish in the process – that mounts with age.