[Animats]

The other extreme is described in "Assholes, a Theory", by Aaron James. This is a serious book on organizational behavior. From a review: "James proposes a theory of assholes (a person is an asshole when his sense of entitlement makes him immune to complaints from other people) that explains not only why assholes are a vital part of human society, but also how to recognize them and coexist with them."

Note the definition: "a person is an asshole when his sense of entitlement makes him immune to complaints from other people." This is the clear opposite of impostor syndrome.

O wad some Pow'r the giftie gie us, To see oursels as ithers see us! - Robert Burns