is generally described as a state of being certain, either that a hypothesis or prediction is correct, or that a chosen course of action is the best or most effective given the circumstances. Confidence can be described as a subjective, emotional state of mind, but is also represented statistically as a confidence level
within which one may be certain that a hypothesis will either be rejected or deemed plausible. Self-confidence
is having confidence in oneself when considering a capability. Arrogance
is having unmerited confidence--believing something or someone is capable or correct when they are not. Overconfidence
is excessive belief, in someone or something, succeeding, without any regard for failure. Scientifically, a situation can only be judged after the aim has been achieved or not. Confidence can be a self-fulfilling prophecy
, as those without it may fail or not try because they lack it, and those with it may succeed because they have it, rather than because of an innate ability.
Choking refers to losing confidence, especially self-confidence, just at the moment when it is needed most and doing poorly as a result e.g. in sports. This is found as a common plot device in literature and film, and is usually devised to result in a total alteration of a character's life.
Usually when someone is referred to as 'confident' they are stubborn. Self-confidence is faith in one's own abilities. One who is self-confident is not necessarily loud, brash, or reckless.
Losing confidence is no longer trusting in the ability to perform. It may be reasonable as the result of past failure to perform, or unreasonable, because one "just has a feeling" about
Confidence in others
People may have confidence in other people or forces beyond their control. For instance, one might have confidence in the police
to protect them, or may have confidence that a sports team
will win a game. Faith
of confidence when used in this sense.