"Feeling Like You're an Expert Can Make You Closed-minded"

Nuh-uh.

From the British Psychological Society's Research Digest:

"Not listening ..."

What happens to us as we accrue knowledge and experience, as we become experts in a field? Competence follows. Effortlessness follows (pdf). But certain downsides can follow too. We reported recently on how experts are vulnerable to an overclaiming error – falsely feeling familiar with things that seem true of a domain but aren’t. Now a new paper in the Journal of Experimental Social Psychology explores how feelings of expertise can lead us to be more dogmatic towards new ideas. 

Victor Ottati at Loyola University and his colleagues manipulated their participants (US residents, average age in their 30s) to feel relative experts or novices in a chosen field, through easy questions like “Who is the current President of the United States?” or tough ones like “Who was Nixon's initial Vice-President?” and through providing feedback to enforce the participants’ feelings of knowledge or ignorance. Those participants manipulated to feel more expert subsequently acted less open-minded toward the same topic, as judged by their responses to items such as “I am open to considering other political viewpoints.”  

People’s perceptions of their all-round expertise – provoked in the participants via an easy rather than a hard trivia quiz – also led them to display a close-mindedness in general, even though it was the participants who took the hard quiz who failed more, and reported feeling more insecure, irritable and negative – ingredients that are normally associated with close-mindedness. This isn’t to say that these emotional states didn’t have any effect, just that any effect was swamped by perceptions of expertise....MORE

In the past I have been less than respectful of the BPS:

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...Having concluded that oil and gas were just a passing fad, this is what we were posting the month Emerge came public:

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Shaman               Witch Doctor

Psychologist            Psychiatrist

I so wish I were kidding.

But I think they are on to something with this research on expertise.