Humans Prefer Cockiness to Expertise

From the New Scientist.

No surprise here. This is a very, very dangerous cognitive glitch. It'd be interesting to find out how hard it is for humans to train themselves out of this (many of us clearly do so, ergo it's possible). It'd also be interesting to find out whether there are any good techniques for doing so, other than the obvious ones.

The terrain here is obviously more complicated than this, of course. Certain degrees and types of confidence are often off-putting and so forth. And, of course, psychology is one of those shaky (quasi-?)sciences that deliver conclusions that must ordinarily be taken with a grain or so of salt...but this conclusion seems to cohere with ordinary experience, so I'm inclined to take it seriously.