Table 1. Demographics and summary statistics.

	Control	MCI	AD
Age*	71.96 (4.94)	73.64 (8.48)	71.37 (6.80)
M/F ratio*	14/14	15/18	7/6
Education†	16.32 (2.79)	15.03 (2.52)	12.69 (2.25)
MMSE‡	28.25 (1.40)	26.82 (1.74)	24.62 (2.43)
WMSIII Logical Memory -delayed recall‡	12.71(2.48)	9.48 (3.30)	5.07 (2.02)
WMSIII Visual Reproduction-delayed recall‡	13.36 (2.86)	9.58 (3.11)	5.31 (1.44)
Beck II Depression Inventory*	5.32 (4.57)	5.12 (3.92)	5.15 (3.87)
Hachinski Vascular Dementia Scale*	1.93 (1.11)	2.29 (1.30)	1.75 (2.00)
% Novel correct score on fMRI task‡ (of 30 trials)	0.71 (0.15)	0.58 (0.18)	0.46 (0.09)
% Familiar correct score on fMRI task† (of 30 trials)	0.96 (0.08)	0.89 (0.17)	0.80 (0.18)
% Novel and familiar correct score on fMRI task‡	0.84 (0.10)	0.74 (0.15)	0.63 (0.12)
% Non-recorded responses (of 60 trials)†	0.02 (0.02)	0.06 (0.09)	0.12 (0.16)

^*  = NS,

^†  = p<0.05,

^‡  = p<0.001

Gender tested via Chi square, other categories tested via ANOVA

Unless otherwise noted, means (SD) are listed.