Table 3.

Confirmatory Factor Analyses of Schizotypy Scale Parcels (n = 6137)

Model	GFI	AGFI	NFI	CFI	RMSEA	RMSEA CI	Chi-square (df)	p value	Δχ2 (Δdf)	p value
Factor Structure for the Total Sample
Unidimensional	0.90	0.82	0.92	0.92	0.111	0.108–0.114	3295.0 (43)	<.001
2-Factora	0.98	0.96	0.98	0.98	0.053	0.050–0.056	772.6 (42)	<.001
2-Factorb	0.99	0.99	0.99	0.99	0.032	0.029–0.036	285.3 (39)	<.001	487.3 (3)	<.001
Factor Invariance across Sex and Ethnicity
Unconstrained	0.98	0.98	0.99	0.99	0.017	0.015–0.019	558.2 (202)	<.001
Regression Weights Constrained	0.98	0.98	0.98	0.99	0.017	0.016–0.019	680.3 (241)	<.001
Structural Covariances Constrained	0.98	0.97	0.98	0.98	0.020	0.018–0.021	841.1 (273)	<.001

Note: GFI, Goodness of Fit Index; AGFI, Adjusted Goodness of Fit Index; NFI, Normed Fit Index; CFI, Comparative Fit Index; RMSEA, Root Mean Square Error of Approximation; RMSEA CI, 90% confidence interval for RMSEA.

^aPositive schizotypy factor (with loadings from the Perceptual Aberration and Magical Ideation Scales) and negative schizotypy factor (with loadings from the Revised Social Anhedonia and Physical Anhedonia Scales).

^bPositive schizotypy factor (with loadings from the Perceptual Aberration, Magical Ideation and Revised Social Anhedonia Scales) and negative schizotypy factor (with loadings from the Revised Social Anhedonia and Physical Anhedonia Scales).