Table 2. Cronbach’s alpha (N=230), Internal consistency (N =32) of the DMQ18 subscale.

DMQ18 Sub scales	Cronbach’s alpha	ICC(95%CI)	p	DF
Cognitive-Oriented Persistence	0.759	0.912(0.819-0.957)	P<0.001	31
Gross Motor Persistence	0.741	0.846(0.685-0.685)
Social Persistence with Adults	0.613	0.957(0.911-0.979)
Social Persistence with children	0.620	0.792(0.574-0.898)
Mastery Pleasure	0.677	0.836(0.663-0.920)
Negative Reactions-frustration/anger	0.654	0.878(0.751-0.941)
Negative Reactions-sadness/shame	0.414	0.908(0.811-0.955)
General Competence	0.802	0.932 (0.862-0.967)
Total	0.930	0.943(0.884-0.972)