Table 1.

Demographic and neuropsychological data and results from the statistical comparisons.

Variable	Healthy young adults (n = 32)/Or Norms (*) Mean (SD)	Healthy elderly (n = 41) Mean (SD)	t (p); Effect size (r); Power (β)
Age (years)	33.44 (8.36)	70.22 (7.34)	−19.99 (<0.001); 0.92; 1.00
Education (years)	12.03 (5.26)	4.85 (3.21)	6.80 (<0.001); 0.70; 1.00
MMSE*	27.76 (1.77)	27.70 (2.10)	0.16 (0.877); 0.01
World List Learning (Total Recall)*	3.55 (1.99)	6.03 (2.20)	6.21 (<0.001); 0.43
World List Learning Recognition*	7.70 (2.31)	9.8 (0.48)	23.73 (<0.001); 0.52
ROF-Copy*	18.08 (6.16)	27.12 (8.56)	5.78 (<0.001); 0.43
ROF-Recall*	6.51 (3.88)	9.77 (7.42)	2.40 (<0.023); 0.20

^*Values taken from the norms (Aguirre-Acevedo et al., 2007), these were compared with the sample's values using one-sample t-tests.