Another thought: it makes a lot of sense that PSI is low in gifted kids because PSI has to do with visual tracking. More average kids are "sure" about what they see, and they follow up on visual stimuli quickly, whereas gifted kids are processing not only visual stimuli but the many intuitions and thoughts that are coming from their brains at the same time (and, in the case of emotionally sensitive kids, also other people's thoughts and feelings!). Consequently, they seem to lose concentration when tracking visually.

I actually told my daughter to SAY the words on the blackboard to herself, then write them down, as opposed to trying to COPY them. She is much more able to write words from her own mind (hearing them in her head).