Table 1.

	Age group
	18–39	40–59	60–95	Age r
N	89	152	179
Age at Time 1	26.0 (6.3)	51.3 (5.3)	72.0 (7.6)
Prop. Females	.53	.74	.59	−.01
Health	2.3 (0.9)	2.2 (0.8)	2.4 (0.9)	.14*
Education	14.8 (2.2)	15.8 (2.4)	16.1 (2.9)	.21*
Scaled Scores
Vocabulary	12.8 (3.1)	12.6 (2.9)	13.5 (2.7)	.11
Digit symbol	11.1 (2.7)	11.6 (3.0)	11.9 (2.6)	.18*
Logical memory	11.3 (2.7)	11.7 (2.8)	12.6 (2.6)	.21*
Word recall	12.1 (3.6)	12.5 (3.6)	12.8 (3.0)	.07
Retest interval (years)	2.2 (0.6)	2.1 (0.6)	2.2 (0.5)	.00

Note. Health is a rating on a 5-point scale ranging from 1 for excellent to 5 for poor. Scaled scores are age-adjusted scores which have means of 10 and standard deviations of 3 in the nationally representative normative samples (i.e., Wechsler, 1997a, 1997b).

^*p < .01.