As we know, learning languages is harder for adults than for children. This article discusses why.
quote:
Adult language learners are, to borrow a phrase used by some psycholinguists, too smart for our own good. We process too much data at once, try to get everything right from the get-go and are self-conscious about our efforts. But toddlers instinctively grasp what’s important and are quite content to say, “Tommy hitted me,” as long as Tommy gets what’s coming to him.
It also theorizes that learning a language as an adult can be beneficial.