Table 1.

Descriptive statistics and correlations among variables of interest

		1	2	3	4	5	6	7	8	9
1.	Negative affect (4m)
2.	Positive affect (4m)	−.25**
3.	Motor activity (4m)	.12*	−.003
4.	Maternal caregiving behaviors (9m)	−.04	−.06	.06
5.	Inattention (7y; P)	−.06	.12	.05	−.05
6.	Hyperactivity/impulsivity (7y; P)	−.01	.10	.05	−.07	.66**
7.	Inattention (9y; T)	−.09	−.03	.25*	−.16	.66**	.52**
8.	Hyperactivity/impulsivity (9y; T)	−.11	−.05	.34**	.10	.20	.27*	.46**
9.	Behavioral problems (7y; P)	.03	.04	.03	.003	.52**	.60**	.38**	.07
	M	26.31	18.42	31.59	.00	1.77	1.69	1.81	1.46	1.36
	SD	30.72	19.61	20.57	1.79	.56	.58	.83	.57	.34
	Skew (standard error)	1.88 (.14)	2.54 (.14)	1.31 (.14)	−.75 (.16)	1.00 (.18)	1.02 (.18)	1.04 (.28)	2.04 (.28)	1.12 (.18)
	Kurtosis (standard error)	5.24 (.29)	9.13 (.29)	3.03 (.28)	.81 (.31)	1.30 (.35)	.69 (.35)	.11 (.56)	5.04 (.56)	.89 (.35)
	n	291	291	291	241	193	193	72	71	193

Note. 4m = 4 months; 9m = 9 months; 7y = 7 years; 9y = 9 years; P = parent-report; T = teacher-report;

^*p < .05,

^**p < .01