![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKRnSUl5fNaIlOrJDAuGxMOuawrOlFRWeM9O0f9BeIh0qTyEOFWZ0g3AAhPWhpfeOFtix9SuFTgRvoNBEZcijOb1LNVs8Xp-GCDIzTZeIkOVV8bZUXinft9zXWx55A9xnvF1Khy-6ILk2f/s200/minddump.png)
Which makes sense because the income gap between the richest 10 percent and poorest 10 percent has grown since then, too.
If only someone could figure out why. I have my thoughts, and thoughts, and thoughts, but there's no hard evidence for the mechanism. We just know that income correlates to scores really well, a direct correlation of (.95).
Update: Dan Pink coincidentally chimes in here, too: How to Predict a Child's SAT Scores. Look at the parents tax return.
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