I remember you mentioning this on a post of mine a couple of days ago. It's nice to see the concept fleshed out into fuller article. I had meant to look it up, but got sidetracked...

I think another way of interpreting this concept, or maybe adding another layer to it - depending on your stand point - would to equate this mindset to one of a righteous ego.

The assertion that one is vastly more intelligent than the rest of the populace, is surely born of an ego centric perspective, and fits the bill of righteousness quite well, I feel.

On the solutions, and how to reconcile this distortion of the mind, it's not so easily solved, as it requires self-inquiry to do so. And, given the underlying problem here is one of unawareness, it's not likely to happen without an external event or trigger.

I think exposure to one's infallibility with regards to over-estimating their intelligence is what it is really takes in my opinion. A short sharp shock to the ego that humbles the person in question into re-examining their mental acuity and cognitive abilities.