Early Intervention: The Moderating Role of the Home Environment

Abstract
The Infant Health and Development Program (IHDP) is an intervention aimed at improving the health and development of premature, low birth weight infants through a combination of education and support for parents plus enriched educational day care and health services for children. A randomized clinical trial procedure was used at 8 program sites to examine the impact of IHDP on children's growth and development from birth to age 3. Follow-up assessments were conducted at ages 5 and 8. The effect of the program on children's intelligence at age 3 was greater for those children from low-quality home environments. However, the home environment was not a moderator of program impact on children's intelligence at the later assessment points, nor was it a moderator of program impact on children's behavior.