Table 1.

Participant demographics.

Group	N	Age (SEM)	CDRa 0/.5/1	MMSEb
YNGc	135	26.5 (.8)	N/A	N/A
	(62M/73F)
OLDd	73	76.8 (.8)	73/0/0	29.0 (25–30)
	(26M/47F)
ADe	91	77.6 (.7)	0/63/28	24.5 (14–30)
	(37M/54F)

^aCDR: Clinical Dementia Rating

^bMMSE: Mini Mental State Examination

^cYNG: younger adults

^dOLD: older adults

^eAD: participants with Alzheimer’s disease