Do Children Learn Languages at Different Rates?

I recently ran across the following article on a Turkish newspaper website:

A research conducted worldwide has established that Turkish children are
the fastest at learning their native language.

The results were released at the International Association for the Study of
Child Language’s 10th congress in Berlin, Germany, where it was indicated
that Turkish children could speak their native language by the age of 2-3
years in a grammatically correct manner. Linguistics Professor Klann Delius
noted that the Turkish language was easy to learn. “Suffixes in Turkish
that determine person and tense are regular. Using them is like arranging
Lego pieces.” According to the research, it takes 12 years for Arab
speaking children, and 4-5 years for German children to acquire the
grammatical mastery in their mother tongue. The congress held in Berlin is
attended by about 800 linguists from around the world.

So, is it true that Arab kids can't speak grammatically correct Arabic
until age 12?

And do kids speaking different languages learn them at different rates?

Joe Murphy
Boy Linguist
.

Relevant Pages

  • Re: The Turkic Languages in a Nutshell
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  • Re: The Turkic Languages in a Nutshell
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