The data available in storage that is no longer often used. Examples include library records, telephone bills, computer time used, old payroll slips, etc. Analysis of these records is used in unobtrusive or observational studies of behavior and to validate the occurrence of self-reported behavior.
ARCHIVAL RCCORDS: “Archival records refers to data currently in storage, that may or may not have to be kept by law – examples include case notes in clinical psychology, and old payroll stubs.”