Table 2.

Results of differentiated validity test and common method bias analysis.

Model	χ2	df	χ2/df	CFI	TLI	RMSEA	SRMR
One-factor model: I1+ I2+ I3+ D1+ D2+ D3	2000.69	275	7.28	0.55	0.51	0.13	0.12
Two-factor model: I1; I2+ I3+ D1+ D2+ D3	1453.54	274	5.30	0.69	0.66	0.11	0.09
Three-factor model: I1; I2; I3+ D1+ D2+ D3	1291.87	272	4.75	0.73	0.71	0.10	0.08
Four-factor model: I1; I2; I3; D1+ D2+ D3	620.75	269	2.31	0.91	0.90	0.06	0.05
Five-factor model: I1; I2; I3; D1; D2+ D3	542.74	265	2.05	0.93	0.92	0.05	0.05
Six-factor model: I1; I2; I3; D1; D2; D3	334.47	256	1.31	0.98	0.98	0.03	0.04

Note: N = 369; I1, work-based social media use; I2, work interruptions; I3, work engagement; D1, job dedication; D2, interpersonal facilitation; D3, task performance; “+” represents two factors combined into one factor.