The claim that there is a key diachronic element to the justification of memory belief has come to be known as preservationism.  Memory, it is thought, serves to preserve both the belief and its justification; a belief that had no justification when it was formed, has no justification to be preserved. According to the preservationist, then, such a belief will be unjustified when recalled (and, for that matter, while in memory). (Preservationist accounts can be found in Audi 1995, Audi 1998, Dummett 1994, Goldman 1999, and Plantinga 1993.)