Table 5.

Measurement invariance of BWAS among young adults and middle-aged adults based on Sample B (N = 347)

Model		χ 2	df	p	CFI	TLI	RMSEA	SRMR	△χ2	△df	△p	|△CFI|	|△RMSEA|
M1: Configural invariance	57.813		28	0.001	0.960	0.940	0.078	0.040	-	-	-	-	-
M2: Metric invariance	60.502		34	0.003	0.965	0.956	0.067	0.045	2.689	6	0.847	0.004	0.011
M3: Scalar invariance	67.200		40	0.005	0.964	0.962	0.063	0.047	6.698	6	0.350	0.001	0.004
M4: Strict invariance	70.875		47	0.014	0.968	0.972	0.054	0.049	3.675	7	0.816	0.004	0.008

Note. BWAS = Bergen Work Addiction Scale; CFI = comparative fit index; TLI = Tucker-Lewis index; RMSEA = root mean square error of approximation; SRMR = standardized root mean square residual. Sample B includes 264 young adults aged between 18–34 years and 83 middle-aged adults between 35–59 years