Does he seem frustrated in his silence?
Is he a pretty happy guy?
Is school going well? Friends?
How about the extended family - have things gone reasonable well for the larger family tree?
I'll be he sometimes gets engaged in some problem-solving activity and you can see the steam rising off his head.
I'm not sure exactly what you mean by PSI underinflating IQ, but yes, PSI and WMI are both independent of what folks usually mean when they say 'smart.' PSI is about speed, and WMI is about working memory = how many aspect of a problem can you keep in mind while you are looking for an answer.
I don't have much to say about the PRI/Verbal split - I'll be watching to see what Dottie says.
Love and More Love,
Grinity
