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A "critical period" in the context of language learning refers to a biologically-specified window of opportunity in which a child can successfully acquire (certain aspects of) language.

The idea is that if a child is not exposed to language within the critical period, then s/he will never be able to acquire language fully (and thus, this is why critical periods are important).

nicely, my son has language delay. he's 5, and has autism. I problem that he has neglected the essential developmental point for language discovering now, and that he won't in any respect particularly discover ways to communicate astounding. i think of if the window of hazard is neglected, language can nevertheless be discovered, yet there's a sort of plateau reached the place you could no longer carry close specific intricacies. i think of the intense era is as much as 3 or so, yet I definitely have heard of young ones catching up after that ingredient. As for my son, i don't be attentive to. wish I did.