Nityananda notes that, in India, a significant portion of the population self-identifies itself as middle class—often ...

For example, imagine a CEO who is considering the acquisition of another business and is faced with ambiguity and uncertainty — overconfidence can lead him or her to the wrong decision.

But too much of it? That’s trouble. Overconfidence can tamper with decisions and bury risks in plain view. It doesn’t throw a business off balance—it can take the whole thing down.

If you know your age cohort is predisposed to overconfidence you have a chance to adjust for it. Messrs Kruger and Dunning found, for example, that training in logic helped human guinea pigs raise ...