TABLE 4.

Factor loadings for neuropsychological variables (standard errors) and squared multiple correlations (SMCs)

	Unstandardized loadings			Standardized loadings			SMC
	VME	RN/WM	PM	VME	RN/WM	PM
WRAML Story Memory	1.00^a			0.64			0.41
WJR Picture Vocabulary	3.75 (0.63)			0.57			0.33
Tokens Test	2.31 (0.34)			0.67			0.45
WRAML Verbal Learning	1.17 (0.16)			0.78			0.61
WRAML Design Copy	1.73 (0.35)			0.46			0.22
Children’s Category Test	1.88 (0.38)			0.46			0.22
CPT Hit RTSE	−3.85 (0.70)			−0.52			0.27
WRAML Design Memory^b	0.17 (0.26)		−1.47(0.65)	0.13		−0.51	0.37
Stroop Word Trial		1.00^a			0.80		0.64
Stroop Color Trial		0.84 (0.08)			0.67		0.44
Stroop Color-Word Trial		0.69 (0.10)			0.55		0.31
Attentional Capacity Test		0.17 (0.02)			0.85		0.73
Trail Making Part A (Time)			1.00^a			0.73	0.53
Trail Making Part B (Time)			1.05 (0.13)			0.58	0.34
Grooved Pegboard, DH (Time)			1.32 (0.23)			0.58	0.33
Grooved Pegboard, NDH (Time)			2.55 (0.48)			0.52	0.27

WJR, Woodcock-Johnson Psychoeducational Test Battery Revised; WRAML, Wide Range Assessment of Memory and Learning; CPT, Conners’ Continuous Performance Test; DH, dominant hand; NDH, nondominant hand, VME, Verbal Memory, Executive/Attention; RN/WM, Rapid Naming and Working Memory; PM, Psychomotor.

By convention, we fix the first loading as 1 for each factor.

Indicates the variable with cross-loading.