Table 3. Main Effects and Interactions for Relationship Domains Predicting Psychosocial Outcomes.

	Unstandardized Regression Coefficients for Outcomes Measured at Month:
	3			6			12
Predictors	b	S.E.	β	b	S.E.	β	b	S.E.	β
Cognitive Development
Ethnicitya
Latina	−2.73†	1.46	−.19	−1.83	2.07	−.06	−6.07*	2.77	−.25
White	−3.00*	1.34	−.23	−.68	1.95	.002	−6.65†	2.54	−.31
Asian	−2.00	1.91	−.09	−.84	2.58	−.04	−3.25	3.41	−.09
Birth Orderb	.87	.96	.07	1.73	1.36	.08	−1.00	1.79	−.05
Maternal Age	−.11	.09	−.09	.05	.12	.02	.06	.16	.03
Obstetric Risk	−.01	.82	−.001	−1.20	1.08	−.07	−3.22*	1.43	−.18
Birth Weight Percentile				.05*	.02
GAB (95% Confidence Interval)	1.72*** (.86–2.58)	.43	.28	1.54* (.38–2.70)	.59	.24	1.99* (.45–3.51)	.77	.20
Psychomotor Development
Ethnicity
Latina	.03	1.96	.001	−6.58*	2.82	−.25	−6.57	4.16	−.18
White	−1.12	1.79	−.07	−1.93	2.63	−.08	−2.62	3.82	−.08
Asian	−.02	2.55	−.001	−4.00	3.53	−.10	−2.84	5.12	−.05
GAB (95% Confidence Interval)	1.90** (.77–3.04)	.58	.24	2.94*** (1.37–4.51)	.80	.27	3.79** (1.52–6.05)	1.15	−.25

^aEthnicity is dummy coded for Latina, White, and Asian.

^bBirth order is dummy coded so a score of 1 indicates first pregnancy.

^† p<.10.

*p<.05.

**p<.01.

***p<.001.