I'm no expert, but from personal experience, DS7 is faster at processing now than he was at 6, just as most 7yos are faster than they were at 6. I doubt his PSI would test higher, since he would now be normed against 7yos...who also improved in the past year... But I see a year's worth of growth in his abilities.

You can often improve memory and processing speed significantly if you really work at it. We do a little work on it, but since DS7 is already above average in those areas (though they're well below his PRI and VCI scores), I don't feel like spending great chunks of our time and effort there. We have other things to do.

He *was* turning fractions into mixed numbers in his head today, though not as fast as I might have liked. That's certainly progress!

Kriston