Illusory superiority is a cognitive bias in which individuals overestimate their own qualities and abilities relative to others. This phenomenon relates to self-enhancement and can manifest in various domains, including intelligence and perceived personal characteristics. It is often referred to as the above-average effect, where most people perceive themselves as better than average, which is statistically impossible for everyone to be in the top half.
An example of illusory superiority is found in the Dunning-Kruger effect, where individuals with low ability in a task believe they are more skilled than they actually are, while those with higher ability may underestimate their competence.
To counter illusory superiority, regularly seek feedback from others and deploy objective measures and evaluations of your abilities to gain a more realistic perspective of where you stand in comparison to others.