attributed to a unbalanced mental/psychological states more than the higher IQ?

Could also be they sense a higher level of responsibility / understanding of event driven causality.

A lot of really smart people I've met are smart in a somewhat concentrated/narrow band but fall short in other areas lower IQ individuals excel in.

This is something I've been trying to work on. I know my weaknesses, both academically and socially. The social awkwardness and anxiety I get in a room of strangers in unsettling, but I'm consciously making myself more available.

Regarding generational gaps, the national broadcaster, The ABC, here in Australia, did a show where they forced (as much as you can do that in the days of ethics committees and human rights) collaborative acts of problem solving upon young and old, together.

Both the oldies and the little brats both gained respect and admiration for one another, and it was a beautiful anthropological/ psychological study into ageism.