 	There are several answers that can be given, but no consensus about what is the right one. One answer is to say that the key issue is responsibility; a character trait is a personality trait for which a person who possesses it is (at least to some degree) responsible for doing so. Another answer is to say that the key issue has to do with normative standards; a character trait is a personality trait for which a person who has it is, in that respect, an appropriate object of normative assessment by the relevant norms (for details about these approaches, see Miller 2014: chapter one). 