Table 4.

Correlations between cognitive trajectory components in Black and White persons

Cognitive outcome	Trajectory components	Black persons Correlation	White persons Correlation
Episodic memory	intercept, preterminal slope	.73	.71
	intercept, change point	.96	.95
	intercept, terminal slope	.18	.43
	preterminal slope, change point	.83	.81
	preterminal slope, terminal slope	.22	.09
	change point, terminal slope	.15	.20
Perceptual speed	intercept, preterminal slope	.47	.58
	intercept, change point	.70	.82
	intercept, terminal slope	.37	.59
	preterminal slope, change point	.79	.66
	preterminal slope, terminal slope	.46	.18
	change point, terminal slope	.68	.18

Note. From mixed-effects change point models adjusted for age and education. All p<.01.