I still think there has to be a better method of measuring that. Some people are fast, sloppy writers, and others are slow and careful. I wouldn't say that fast and sloppy equals "brighter". DD is very fast with other fine motor skills, like making those rainbow loom things, weaving, braiding hair, playing piano, etc. Those are all things where the "slow processing" isn't apparent. Ask her what 9X6 + 8X7 is though and it will be more obvious. So there are big differences between motor speed with her depending on the task. Writing is really the only area where I see a deficit in terms of fine motor.