Psychometric properties of an Arabic translation of the briefest version of the Zimbardo time perspective inventory (ZTPI-15)

Table 3 Measurement Invariance of the ZTPI scale in the total sample

Model	χ²	df	CFI	RMSEA	SRMR	Model Comparison	Δχ²	ΔCFI	ΔRMSEA	ΔSRMR	Δdf	p
Model 1: Across gender
Configural	274.52	158	0.915	0.042	0.078
Metric	290.22	168	0.911	0.042	0.083	Configural vs. metric	15.7	0.004	< 0.001	0.005	10	0.108
Scalar	308.19	178	0.905	0.042	0.083	Metric vs. scalar	17.97	0.006	< 0.001	< 0.001	10	0.055
Model 2: Across marital status
Configural	302.97	158	0.895	0.047	0.073
Metric	315.58	168	0.893	0.046	0.074	Configural vs. metric	12.61	0.002	0.001	0.001	10	0.246
Scalar	326.34	178	0.892	0.044	0.074	Metric vs. scalar	10.76	0.001	0.002	< 0.001	10	0.376
Model 1: Across education level
Configural	311.63	158	0.891	0.048	0.177
Metric	334.44	168	0.882	0.049	0.181	Configural vs. metric	22.81	0.009	0.001	0.004	10	0.011
Scalar	340.91	178	0.884	0.047	0.181	Metric vs. scalar	6.47	0.002	0.002	< 0.001	10	0.774

Note. CFI = Comparative fit index; RMSEA = Steiger-Lind root mean square error of approximation; SRMR = Standardised root mean square residual

ISSN: 1471-244X