The democratic process relies on the assumption that
  citizens (the majority of them, at least) can recognize
  the best political candidate, or best policy idea, when
  they see it. But a growing body of research has revealed
  an unfortunate aspect of the human psyche that would seem
  to disprove this notion, and imply instead that democratic
  elections produce mediocre leadership and policies.

Unfortunately, the researchers in question aren't intelligent enough to realize the best form of government is a mediocre one.

A government that is competent enough to survive and incompetent enough to be unable to interfere in the lives of its citizens.