Hi cc6,
It is all kinda messy. First, you can't judge an individual case from statistics. And since we are all here because we are raising statistical anomalies (note to self... remember to tell DS that,) it is hard to make conclusions. In essence, that 3% case represents a mirroring of a typical brain organization. So, you'd reread any reference to brain hemispheres the opposite. The mainstream concept of right hemi = creative/ left hemi = logical becomes right hemi = logical, left = creative.

But who knows, it could be the case that your son has language processing in the same hemisphere as spatial processing. Makes for interesting speculation.

Oddly, I remember my parents saying I always tried to write with my left hand, but the school made me write with my right. Never thought about it until now thinking about my son's handwriting issues and this thread. So, I experimented with my arm hooked and I may write better that way. Surreal.