. Author manuscript; available in PMC: 2018 Mar 1.

Published in final edited form as: Child Dev. 2016 Oct 6;88(2):640–657. doi: 10.1111/cdev.12617

Table 1.

Descriptive Data and Internal Reliability of Measures

	Girls			Boys

	M	SD	α	M	SD	α
2^nd grade victimization	1.91	.54	.93	1.90	.52	.92
3^rd grade victimization	1.84	.53	.95	1.85	.55	.95
4^th grade victimization	1.75	.49	.94	1.83	.55	.95
5^th grade victimization	1.72	.52	.95	1.71	.49	.95
6^th grade victimization^a	1.58	.47	.95	1.67	.46	.94
2^nd grade effortful engagement	3.98	.54	.80	3.89	.57	.80
3^rd grade effortful engagement	3.84	.51	.83	3.79	.54	.83
4^th grade effortful engagement	3.97	.58	.85	3.88	.60	.85
5^th grade effortful engagement	4.01	.66	.86	3.94	.58	.86
6^th grade effortful engagement	4.08	.70	.85	4.01	.64	.88
2^nd grade effortful disengagement	1.89	.45	.65	1.92	.47	.68
3^rd grade effortful disengagement	2.32	.36	.75	2.29	.38	.79
4^th grade effortful disengagement	2.21	.35	.79	2.22	.39	.79
5^th grade effortful disengagement	2.21	.36	.80	2.17	.36	.74
6^th grade effortful disengagement	2.17	.33	.80	2.15	.36	.80
2^nd grade involuntary engagement	2.32	.40	.76	2.36	.42	.70
3^rd grade involuntary engagement	2.22	.38	.82	2.24	.39	.79
4^th grade involuntary engagement	2.20	.39	.84	2.24	.40	.80
5^th grade involuntary engagement	2.20	.41	.85	2.23	.38	.82
6^th grade involuntary engagement	2.19	.42	.89	2.22	.41	.83
2^nd grade involuntary disengagement	1.83	.34	.72	1.84	.38	.71
3^rd grade involuntary disengagement	1.67	.31	.74	1.71	.34	.75
4^th grade involuntary disengagement	1.62	.32	.81	1.67	.35	.81
5^th grade involuntary disengagement	1.59	.38	.83	1.65	.35	.80
6^th grade involuntary disengagement	1.55	.35	.87	1.60	.34	.83

Differs across sex at p < .05.