the data is too old. therefore the conclusions are wrong.
It's 2013, not 1990 or 1995.
Did you check the links for the articles, or you just religiously believed what is preached there?
I had to find them, particularly the first one and the curriculum aid, both of which I read years ago. And you didn't read them; you have no idea what is in them or you'd be able to pinpoint
something that you found particularly irritating.
You're covering for it by saying it's too old, which you knew because Unkotare said one of them was from 1992. So stop pretending.
And people wonder why I rarely post links. This is why. They're like bible verses, you can toss them around all day but they change the minds of no one.