Table 4.

Results from the structural model of the multivariate latent change model of white matter FA, g_f, memory, and processing speed (for speed, higher values indicate better scores)

Path type (correlation)	Path	Estimate	SE	p value
Level–level	FA–gf	0.192	0.047	<0.001
	FA–speed	0.240	0.046	<0.001
	FA–memory	0.106	0.053	0.045
	gf–speed	0.603	0.039	<0.001
	gf–memory	0.875	0.037	<0.001
	Speed–memory	0.593	0.045	<0.001
Level–change (Δ)	FA–ΔFA	−0.414	0.053	<0.001
	FA–Δgf	−0.072	0.093	0.444
	FA–Δspeed	0.153	0.070	0.029
	FA–Δmemory	−0.078	0.067	0.246
	gf–Δgf	−0.041	0.096	0.670
	gf–ΔFA	−0.076	0.066	0.252
	gf–Δspeed	0.189	0.067	0.005
	gf–Δmemory	0.073	0.066	0.267
	Speed–Δspeed	−0.091	0.077	0.238
	Speed–ΔFA	0.036	0.072	0.614
	Speed–Δgf	0.155	0.097	0.108
	Speed–Δmemory	0.095	0.069	0.166
	Memory–Δmemory	−0.114	0.081	0.159
	Memory–ΔFA	0.007	0.077	0.928
	Memory–Δgf	0.026	0.109	0.813
	Memory–Δspeed	0.129	0.079	0.104
Change (Δ)–change (Δ)	ΔFA–Δgf	0.312	0.123	0.011
	ΔFA–Δspeed	−0.061	0.094	0.512
	ΔFA–Δmemory	0.034	0.090	0.701
	Δgf–Δspeed	0.645	0.159	<0.001
	Δgf–Δmemory	0.637	0.128	<0.001
	ΔSpeed–Δmemory	0.561	0.086	<0.001

Full model diagram shown in Figure 2. Results taken from the model are adjusted for age at testing and sex. Estimates are standardized.