Table 1.

Cronbach’s Alpha and McDonald’s Omega for the SDQ subscales for the parent and teacher version

SDQ parent	Measurement 1		Measurement 2		Measurement 3
	α	ω	α	ω	α	ω
Emotional symptoms	.63	.79	.67	.82	.66	.81
Conduct problems	.48	.70	.46	.67	.55	.77
Hyperactivity	.77	.86	.79	.88	.81	.89
Peer problems	.51	.73	.54	.75	.63	.81
Prosocial behavior	.61	.75	.67	.81	.68	.82
Total difficulties	.77	.87	.78	.89	.82	.90
SDQ teacher	Measurement 1		Measurement 2		Measurement 3
	α	ω	α	ω	α	ω
Emotional symptoms	.71	.87	.75	.89	.72	.87
Conduct problems	.53	.85	.68	.85	.73	.89
Hyperactivity	.83	.92	.88	.95	.88	.95
Peer problems	.64	.82	.67	.82	.67	.82
Prosocial behavior	.81	.89	.82	.90	.81	.90
Total problems	.80	.91	.85	.93	.85	.93