Question

Bryce often acts so daring and overconfident that few people realize he is actually riddled with unconscious insecurity and self-doubt. bryce best illustrates the use of a defense mechanism known as

Answer 1

Answer is: reaction formation.
Reaction formation is a type of defense mechanism. Person acts in the exact opposite manner to his own upsetting (do opposite of what they really want). Person with this behavior is often unconscious of his action and sometime this reactions are exaggerated.