How can children learn several languages at a time at a very young age (like 3-4 years) and not confuse words?

Question

Also: does it hinder their progress at each language?

In: Biology

Answer 1

Children do confuse words at that age, even if they only learn one language. They’ll have an easier time keeping languages separate if each person they know only speaks one language, but there’s still going to be some mangled vocabulary.