Table 1.

A subset of stratified scores for TMTB

Age/Education	Normative Scores on TMTB
18–24	47.0±12.7
25–34	50.7±12.4
35–44	58.5±16.4
45–54	63.8±14.4
55–59 (12+)	68.7±21.0
60–64 (12+)	64.6±18.6
65–69 (12+)	67.1±09.3
70–74 (12+)	86.3±24.1

“12+” is the designation that the particular cohort has completed 12 or more years of education; normative scores for cohorts of these ages with 0–12 years of age are not shown. Normative scores are reported as the mean±standard deviation in seconds. The age cohorts 25–34, 35–44, and 45–54 did not display education-dependent differences. See Tombaugh [34] for more details.