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

Cognitive Research: Principles and Implications

Table 8 Change in goodness-of-it indices for selected demographic characteristics

	CFI	ΔCFI	RMSEA	ΔRMSEA	χ²	Δχ²	df	Δdf	p
Age
Configural	0.947	NA	0.055	NA	222.05		114
Metric	0.943	0.004	0.055	0	238.9	16.841	122	8	0.032
Scalar	0.931	0.012	0.058	0.003	270.41	31.51	130	8	< .001
Gender
Configural	0.961	NA	0.047	NA	193.55		114
Metric	0.957	0.004	0.048	0.001	209.43	15.882	122	8	0.044
Scalar	0.941	0.016	0.055	0.007	250.68	41.249	130	8	< .001
Education
Configural	0.946	NA	0.054	NA	215.75		114
Metric	0.944	0.003	0.053	0.001	228.72	12.971	122	8	0.113
Scalar	0.938	0.006	0.054	0.001	247.4	18.675	130	8	0.017