Dunning–Kruger Effect
From Wikicliki
The Dunning–Kruger effect is a cognitive bias in which "people reach erroneous conclusions and make unfortunate choices but their incompetence robs them of the metacognitive ability to realize it."
Kruger and Dunning proposed that, for a given skill, incompetent people will:
1. tend to overestimate their own level of skill; 2. fail to recognize genuine skill in others; 3. fail to recognize the extremity of their inadequacy; 4. recognize and acknowledge their own previous lack of skill, if they can be trained to substantially improve.