Controversial Theory of the Evolution of Self-Deception

Monday 1 September 2014 0 comments

People who are overconfident in their own abilities are considered more talented by others than they really are, a new study finds.


These overconfident individuals are probably more likely to get promoted, to become the leaders of organisations and even nations.

On the other hand, people who are not so confident in their abilities are judged as less competent than they actually are.

The findings, published in the journal PLOS ONE, provide evidence for a controversial theory of the evolution of self-deception.

Being better at deceiving yourself makes you better at deceiving others, some have argued, and this study provides evidence for the theory.

Dr. Vivek Nityananda, who co-authored the study, explained:

“These findings suggest that people don’t always reward the most accomplished individual but rather the most self-deceived.

We think this supports an evolutionary theory of self-deception.

It can be beneficial to have others believe you are better than you are and the best way to do this is to deceive yourself — which might be what we have evolved to do.”

In the research itself, students were asked to rate their own abilities and those of their peers.

In comparison to their actual final marks on the course, almost half were over-confident (40%), just under half were under-confident (45%), and the rest were accurate in judging their own abilities.

When rating each other, though, those who were over-confident received higher ratings from their peers.

Meanwhile those who were under-confident received lower ratings from their peers.

Fascinatingly, the results were just as true at the start of the course when the students hardly knew each other as they were after six weeks when the students knew each other better.

The study shows how belief in your own abilities doesn’t just affect you but also those around you, who also pick up on your levels of self-belief very quickly.
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