Table 2.

Descriptive statistics for healthy older participants on measures of cognition

Assessment	Mean	SD	Min	Max
MMSE	28.88	1.03	27	30
WAIS-III Vocabulary	55.28	5.42	32	69
Digit Symbol (RT)	1618.7	326.19	983.96	3000.56
Digit Symbol (ACC)	97.95%	1.92%	91.67%	100%
Verbal Working Memory (PU)	0.74	0.15	0.30	0.99
Stroop Effect (ms)	64.60	79.54	−54.93	419.95

MMSE = Mini Mental State Exam; WAIS = Wechsler Adult Intelligence Scale; RT = reaction time; ACC = accuracy; PU = partial-credit unit scoring; ms = milliseconds