Model fit

Indicator

Models Tested

MODEL A 1-factor (Campbell-Sills & Stein, 2007)

MODEL B^a 2-factor (Smith et al., 2019)

MODEL C^b

2-factor (Tourunen et al., 2021)

MODEL D^c

2-factor Bifactor

χ²

82.42

7.25

75.44

87.42

df

35

34

33

25

χ²/df

2.35

2.07

2.29

3.5

CFI

.944

.957

.95

.962

TLI

.928

.943

.932

.931

RMSEA

.056

.05

.054

.055

Low 90% CI

.043

.035

.041

.038

High 90% CI

.069

.064

.068

.072

SRMR

.045

.041

.042

.035

BIC

11,027.26

11,015.6

11,028.84

11,044.41

AIC

10,945.76

10,927.98

10,939.18

10,922.15

Loadings per Factor

.498 - .706

F1 = .497 - .720

F2 = .532 - .715

F1 = .570 - .713

F2 = −.048 - .592

F1= −.178 - .459

F2 = −.174 - .568

G = .478 - .719

Factor Inter-Correlation

-

.862

.871

-