. Author manuscript; available in PMC: 2018 Dec 1.

Published in final edited form as: J Psychopathol Behav Assess. 2017 Jun 7;39(4):657–668. doi: 10.1007/s10862-017-9606-x

Table 5.

Fit Statistics for the One-Factor Three-Positively-Worded-Item Optimism Configural Invariance, Metric Invariance, and Factor Variance Invariance Models of the LOT-R

Model	S-Bχ²	df	p	CFI^a	SRMR^b	RMSEA^b	Reference Model #	ΔS-Bχ2	Δdf	Δp	ΔCFI
1. Configural^{^}
2. Metric	1.76	2	0.42	1.00	0.029	0.00
3. Factor	4.37	3	0.22	0.99	0.08	0.05	2	2.40	1	0.20	0.01

Note.

^{^}

Model is just identified; information is unavailable.

S-B = Satorra-Bentler; CFI = robust comparative fit index; SRMR = standardized root mean square residual; RMSEA = root mean square error of approximation.

Acceptable fit > .90, Good fit >.95.

Acceptable fit < .08, Good fit < .05.