Table 2.

Scale reliability and validity tests.

Variables	RMSEA	NNFI	CFI	IFI	AGFI	CN	Cronbach’s alpha
Self-control	0.063	0.93	0.95	0.95	0.97	330.83	0.874
Problem behavior	0.069	0.90	0.93	0.93	0.96	271.42	0.854