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. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Soc Dev. 2011 Sep 13;21(2):354–375. doi: 10.1111/j.1467-9507.2011.00631.x

Table 1.

Descriptive Statistics of Relational (RAgg) and Physical Aggression (PAgg) Grades 3–6

Variable	Boys			Girls			Difference
Variable	N	Mean	SD	N	Mean	SD	F
RAgg G3	540	2.62	2.29	536	3.19	2.70	14.05^***
RAgg G4	534	2.58	2.37	525	2.90	2.53	4.60^*
RAgg G5	529	2.51	2.30	524	3.15	2.71	17.42^***
RAgg G6	519	2.41	2.36	520	2.90	2.45	10.67^**
PAgg G3	547	1.06	1.80	538	0.72	1.51	11.65^***
PAgg G4	535	1.01	1.84	525	0.56	1.19	22.78^***
PAgg G5	527	1.03	1.87	526	0.57	1.33	21.50^***
PAgg G6	519	0.94	1.73	521	0.47	1.08	27.78^***

^*

p < .05.

^**

p < .01.

^***

p < .001.