A randomized trial evaluated the efficacy of 17 Early Head Start (EHS) programs. 3, 001 low-income
families with a pregnant women or an infant under 12 months were
assigned to a treatment or control group. Data were collected when children were 1, 2, 3, and 5 years old. Analyses examined (1) impacts at ages 2 and 3 (while services were being offered) and at age 5, and (2)
contributions of early education experiences across children's first 5
years of life.

Child outcomes included cognition, language, attention, behavior problems, and health, maternal outcomes included parenting, mental health, and employment