That's what's fundamentally wrong with us as a appreciate. 20 years and highly specialized, focused question.... "But my different question has an anecdotal different answer!".

The key issue is: these studies look at correlation but you're arguing from causation. Don't do that, please.

To be clear: I don't know where you're from and have no idea of the education system you're referencing to - yet the chances are high that I works agree with you in a different setting.

A correlation study about the influence of early exposure to Kong term evaluation in the same system isn't it though.