Are children who talk late smart or stupid?

Children who talk late are definitely not stupid. Simply put, you can't judge whether a child is smart or stupid by speaking sooner or later.

Every child has his observation ability and language ability. Maybe it has something to do with parents and the surrounding environment.

Some children just talk early, while others just talk late.

His later language ability may be greatly improved, which depends on a later training. Including nutrition, is also important.

I think babies nowadays are very clever. Education is very important.

Parents pay a lot.

At least I think there is a verification that each generation is smarter than the previous generation.