exceptional selection

n. an appraisal technique in which a portion within a body of records is chosen for permanent retention based on its unusual qualities or greater historical importance


Exceptional selection includes such appraisal decisions as deciding to preserve court case files relating to the most notorious crimes (murder and rape) or the records of the famous and infamous over those of others. The idea behind exceptional selection is that the archivist chooses those files most likely to be used in the future. In some cases, exceptional selection is also a type of oversampling, although exceptional selection may also be the only sampling technique used for a body of records.