Hmm. I've seen this chart before and have always been a bit dubious about some of its claims.
Ex. I'm not convinced that a speaking a word at 7.9 months is a "normal" developmental milestone. This seems pretty early to me (extremely so for the general population), and also because the chart says a vocabulary of 4-6 words doesn't come until ~8 months later.
Also, my kids' pediatrican told me that the standard 24 month milestone is combining 2 words (onset 18-23 months), not simple sentences. And if a child has a vocabulary of 20 words at 21 months, how can he "combine several words"? His vocabulary isn't big enough for that unless he just strings them together with no meaning. From what I've read, combining
two words happens when a child has a vocabulary of ~25 words.
Not throwing a ball until age 4 seems pretty late to me? I'm pretty sure this happens a little before age 2.
Also, what does "30% advanced"
mean, exactly?
Has anyone ever wondered about this chart?
Val
