Table 2.

Working memory task performance

	CN (n = 43)	MCI (n = 31)	Cohen's d
Object hits	0.85 (0.16)	0.62 (0.24)**
Object false alarms	0.02 (0.04)	0.06 (0.07)*
Location hits	0.94 (0.07)	0.80 (0.21)**
Location false alarms	0.06 (0.07)	0.13 (0.16)*
Conjunction hits	0.92 (0.07)	0.77 (0.18)**
Conjunction false alarms	0.10 (0.10)	0.21 (0.15)*
Object discrimination (d′)	2.83 (0.64)	1.86 (0.96)**	1.19
Location discrimination (d′)	2.97 (0.58)	2.17 (1.05)**	0.94
Conjunction discrimination (d′)	2.64 (0.68)	1.74 (1.08)**	1.00

Note: *P < 0.01; **P < 0.001.