Table 2.

The score (mean±SD) of impulsivity, grouped by gender and aggressive behaviour

	Boys			Girls
	Aggressors	Non-aggressors	P value	Aggressors	Non-aggressors	P value
Total impulsivity	2.27 (0.36)	2.02 (0.33)	<0.001*	2.32 (0.40)	2.03 (0.33)	<0.001†
AI	2.27 (0.45)	2.02 (0.39)	<0.001*	2.20 (0.46)	1.95 (0.36)	0.002†
MI	2.28 (0.51)	1.98 (0.41)	<0.001†	2.33 (0.52)	1.99 (0.40)	<0.001†
NPI	2.26 (0.44)	2.06 (0.46)	<0.001*	2.41 (0.52)	2.14 (0.46)	0.001*

*Two-sample t-test.

†Wilcoxon test.

AI, attentional impulsivity; MI, motor impulsivity; NPI, non-planning impulsivity.