Table 2.

Age-specific findings for global and within-domain construct validity (CV), for behavior and topography of activation. Age groups were divided at median age Also provided in a test of the difference in magnitude of the CV between young and old CV (ΔCV), Significant results at p<0.05 are in bold.

	Memory	Fluid	Speed	Vocabulary	Global
Behavioral construct validity
Old CV	0.25, p=0.08	0.44,p=0.02	0.74,p<0.01	0.58, p<0.01	0.50, p<0.01
Young CV	0.19, p=0.21	0.64, p<0.01	0.99, p<0.01	0.44, p=0.02	0.56, p<0.01
Young-Old ΔCV	−0.06, p=0.70	0.20, p=0.06	0.25, p=0.10	−0.14, p=0.83	0.21, p=0.41
Topographic construct validity
Old CV	0.82, p=0.01	0.99, p<0.01	0.32, p=0.12	0.17, p=0.23	0.57, p<0.01
Young CV	0.63, p=0.03	0.76, p=0.02	0.39, p=0.06	0.27, p=0.17	0.51, p<0.01
Young-Old ΔCV	−0.19, p=0.82	−0.23, p=0.80	0.08, p=0.38	0.10, p=0.29	−0.06, p=0.73