I find this hard to believe, too. I would also like to see the data broken down by how much kids read. I would be surprised if a kid who read 4x more books (fi

I find this hard to believe, too. I would also like to see the data broken down by how much kids read. I would be surprised if a kid who read 4x more books (fiction, or any kind of book) and spoke 3 languages didn't have a larger vocabulary and better expressiveness than an average-reading TV-watching monolingual kid.