Confirmed.  "Why People Dislike Really Smart Leaders" by Matthew Hutson makes me sad.  

The article didn't provide any new scientific insight into 'why'.  It merely restated the findings of a study confirming that highly intelligent leaders aren't liked.  I've already intimately known the problem, so no surprise there.

But I am most saddened that the study's author thinks highly intelligent leaders can fix their popularity problems by becoming more charasmatic speakers.

For one, I could actually use scientific studies to make a substantial case that most of the 12 characteristics of charisma are anathema to high intelligence.

For example:

Self confidence vs highly intelligent people (HIP) are supremely aware of their weaknesses

Rapport vs from a young age HIPs have larger vocabs available to them than what averages understand, making connection more difficult

It's been my experience that answering the question of 'why' the perception of ineffectiveness persists - in spite of objective results to the contrary - can be explained only by irrational causes.

ie the current anti-intelligence fad and the tendency for humans in corporate settings to respond negatively when feeling insecure (ie not the smartest person in the room)

And though I don't know if there can be a cure for an irrational cause, I am confident the cure is not found in joining Toastmasters.