According to Dunning-Kruger effect people unable to recognize own incompetence and overestimate how smart they are. This is cognitive biases (systematic error in thinking). Incompetent people don’t understand how much incompetent they are. As result they rank themselves above average but in really their knowledge is below average. And vice versa. Competent people rank themselves lower because they this that test was easy for everyone, and everyone must score high.

Low performers are unable to recognize the skill and competence levels of other people, which is part of the reason why they consistently view themselves as better, more capable, and more knowledgeable than others.
The Dunning-Kruger effect

Incompetent people have inappropriate high confidence. In one study found that women and man performed equally on since quiz but women rated their results lower because they believed they had less scientific reasoning ability than man. Sounds irrational but it influence on even how much salary man vs women gonna ask.
Almost everyone will describe themselves as above average in intelligence, humor, skills. But it’s impossible to accurately judge self because of lack if metacognition (“thinking about thinking”, “cognition about cognition”,”knowing about knowing”,”aware of one’s awareness”).

There’s available polar opposite to Dunning-Kruger effect and it’s imposter syndrome. imposter syndrome
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