How do we measure attention? Using factor analysis to establish construct validity of neuropsychological tests

Cognitive Research: Principles and Implications

Table 5 Goodness of fit of factor structures

	CFI	TLI	RMSEA (90% CI)	SRMR	χ²	df	AIC	BIC
A priori structures
One Factor	0.871	0.845	0.078 (0.065, 0.092)	0.062	176.387	65	12,774.15	12,868.56
Two Factors	0.881	0.855	0.076 (0.062, 0.090)	0.061	166.579	64	12,766.34	12,864.38
Structures extracted from the exploratory factor analysis
Three factors	0.927	0.908	0.060 (0.045, 0.075)	0.053	124.657	62	12,728.42	12,833.73
Four factors	0.936	0.917	0.057 (0.041, 0.073)	0.050	114.744	60	12,722.51	12,835.08
Five factors	0.938	0.915	0.058 (0.042, 0.074)	0.049	110.770	57	12,724.53	12,847.99
Hierarchical factor model with five factors
	0.932	0.914	0.058 (0.043, 0.074)	0.052	120.742	62	12,724.51	12,829.81