Table 1.

Demographics and cognitive performance for young and older adults

Demographics	Young adults	Older adults	P
N	14	13
Age, years (range, SD)	22.6 (20-26, 1.7)	68.2 (64-74, 3.7)
Gender (f/m)	10/4	9/4	n.s.
Education, years (range, SD)	2.7 (2-3, 0.5)	2.4 (1-3, 0.9)	n.s.
Cognitive scores
Operation span	45.3 (20.1)	20.1 (13.4)	0.002
MMSE (range, SD)		27.6 (26-30, 1.2)
Stroop task (RT)
Neutral (SD)	830 (167.7)	1314.8 (184)	0.001
Congruent (SD)	856 (183.2)	1428 (261)	0.001
Incongruent (SD)	1070.5 (242.7)	1650.9 (308)	0.001

Values are means (range, SD) except for gender, which represents number of participants

MMSE, mini-mental state examination; P, p value for the comparison of young and older adults; RT, reaction time; n.s., nonsignificant

Education equals the number of years after high school