. Author manuscript; available in PMC: 2012 Feb 1.

Published in final edited form as: Dev Psychopathol. 2011 Feb;23(1):225–238. doi: 10.1017/S0954579410000751

Table 1.

Descriptive Statistics (CDP Sample)

	N	M	SD
Physical Discipline^a
Age 6	501	1.02	.83
Age 7	479	.87	.76
Age 8	479	.77	.80
Age 9	230	.64	.74
Child Externalizing Behavior^b
Age 6	537	1.89	1.74
Age 7	517	1.89	1.86
Age 8	498	1.84	1.80
Age 9	468	1.80	1.84

Note: Physical discipline data at age 9 were available only for cohort 1.

= mother reports

= teacher reports