Table 1.

Descriptive Statistics of Study Variables (N = 1,173)

Variable	M	SD	Min	Max	N	%
Mothers Parenting Stress, 15 months	1.56	0.52	1	4
Fathers Parenting Stress, 15 months	1.52	0.52	1	4
Mothers Parenting Stress, 36 months	1.59	0.52	1	3.5
Fathers Parenting Stress, 36 months	1.60	0.51	1	3.5
Mothers Responsiveness	4.64	0.85	1.6	7
Fathers Responsiveness	4.58	0.86	1.6	7
Child PPVT	90.24	15.33	26	142
Child Prosocial Behavior	2.39	0.49	0.2	3
Child Behavior Problems	0.39	0.26	0	1.5
Mothers Depressive Symptoms	4.51	5.67	0	36
Fathers Depressive Symptoms	3.86	5.42	0	34
Mothers Age	23.20	4.75	18	41
Fathers Age	25.52	6.17	18	61
Biological children	1.35	0.72	1	5
How Often Live Together, 15 months	3.35	1.12	1	4
How Often Live Together, 36 months	3.08	1.26	1	4
Income-to-Poverty Status, 15 months	1.23	0.84	0	5.21
Marital Status, Baseline
Unmarried					1079	91.99
Married					94	8.01
Marital Status, 36-Month
Unmarried					815	69.48
Married					358	30.52
Couple Race
White					231	19.79
Black					610	52.27
Hispanic					209	17.91
Other					117	10.03
Child Sex
Female					545	48.92
Male					569	51.08
Treatment Group
Control					571	48.68
Treatment					602	51.32
Parent Education
Less than high school					180	15.38
1 parent high school diploma					426	36.41
2 parents high school diploma					564	48.21