The Dunning-Kruger effect is related to the cognitive bias of illusory superiority and comes from the inability of people to recognize their lack of knowledge or ability. In turn, these individuals will lack the ability to recognize their own mistakes and errors, making them exceptionally confident and biased self-evaluators. They are also unable to fairly judge other people’s performance.
I wasn’t aware of the exact psychological term for this — this was a very interesting read. Thank you for sharing. It also reminded me of an aphorism how the most incompetent people are also the happiest. Perhaps it’s all interrelated.