In addition to the skills chosen for a character, he or she is also subject to the development of character traits that are a direct result of their behaviour (i.e. - bravery, cowardice) or the situations they find themselves in (i.e. - alcoholism, madness, promiscuity, boredom or all of these things). A negative trait is acquired gradually from a certain pattern of behaviour and can usually be expunged by a continued display of the opposite behaviour.