Doctors' confidence unshakeable: study

Doctors remain stubbornly confident in their diagnoses, even when getting tough cases wrong, a study finds.

The research, published Tuesday in JAMA Internal Medicine, found that diagnostic accuracy declined when doctors were presented with increasingly complex cases.

But this was not matched by their confidence, which stayed unshakably constant, even as their diagnoses got wider of the mark.

And the more confident doctors were,