Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:‚Ä¶and (b) Logical Memory (LM) standard scores for immediate and delayed (30-minute delay) recall subtests from the Wechsler Memory Scale‚Äî Revised (WMS-R; Wechsler, 1987) with more recent normative data for the LM subtest from the Mayo‚Äôs Older Americans Normative Studies (MOANS; Ivnik et al., 1992).
Category: