Table 2:

Reliability and validity test results

Variable		Item	Estimate	Squared multiple correlation	Standardized residuals	Construct reliability	Average variance extracted	Cronbach's α
									Mobile phone dependence	Inability to control craving	1	0.646	0.417	0.583	0.695	0.432	0.833
											2	0.706	0.498	0.502
3	0.617	0.381	0.619
Withdrawal or escape	5	0.651	0.424	0.576	0.747	0.497	0.842
	6	0.749	0.561	0.439
	9	0.711	0.506	0.494
Feeling anxious and lost	10	0.743	0.552	0.448	0.918	0.652	0.933
	11	0.766	0.587	0.413
	13	0.875	0.766	0.234
	14	0.821	0.674	0.326
	15	0.842	0.709	0.291
	19	0.790	0.624	0.376
Productivity loss	16	0.755	0.570	0.430	0.744	0.493	0.840
	17	0.712	0.507	0.493
	18	0.635	0.403	0.597
	2	0.865	0.748	0.252	0.976	0.805	0.976
	3	0.885	0.783	0.217
	4	0.873	0.762	0.238
Self-efficacy for self-regulated learning		5	0.896	0.803	0.197
		6	0.900	0.810	0.190
		7	0.907	0.823	0.177
		8	0.908	0.824	0.176
		9	0.927	0.859	0.141
		10	0.886	0.785	0.215
		11	0.926	0.857	0.143
Time management disposition	Time values		0.824	0.679	0.321	0.903	0.758	0.944
	Time efficiency sense		0.980	0.960	0.040			0.938
	Sense of time monitoring		0.797	0.635	0.365			0.975
		1	0.722	0.521	0.479	0.954	0.675	0.954
		2	0.719	0.517	0.483
		4	0.850	0.723	0.278
Academic procrastination		5	0.859	0.738	0.262
		7	0.851	0.724	0.276
		8	0.850	0.723	0.278
		10	0.807	0.651	0.349
		11	0.853	0.728	0.272
		13	0.848	0.719	0.281
		14	0.837	0.701	0.299

Root mean square error of approximation (RMSEA)=0.070, Tucker -Lewis index (TLI)=0.914, Comparative fit index (CFI)=0.922, χ²=1,642.655 (p<0.001), df=634, χ²/df=2.591