Table 1.

Estimated marginal means and standard errors on temperament, externalizing, and internalizing variables per group.

Treatment Group	12-Month, Mean (Standard Error)	24-Month, Mean (Standard Error)
Negative Emotionality
Co-parenting	2.720 (0.102)	-
Couples	2.849 (0.104)	-
Information Only	3.165 (0.109)	-
Internalizing Symptoms
Co-parenting	0.341 (0.027)	0.450 (0.029)
Couples	0.379 (0.028)	0.451 (0.030)
Information Only	0.417 (0.028)	0.509 (0.026)
Externalizing Symptoms
Co-parenting	0.371 (0.023)	0.429 (0.030)
Couples	0.369 (0.025)	0.415 (0.032)
Information Only	0.462 (0.031)	0.478 (0.037)