Research continues to confirm the greater effi-cacy of early action-and in some cases, intensive intervention-as compared with remediation and other “too little”or “ too late” approaches. Changing young children’s experiences can substantially affect their development and learning, especially when intervention starts early in life and is not an isolated action but a broad-gauged set of strate-gies.40 For example, Early Head Start, a comprehend-sive two-generational program for children under age 3 and their families, has been shown to pro-mote cognitive, language, and social and emotional development.41 The success of Early Head Start illustrates that high-quality services for infants and toddlers-far too rare in the United Ststes today-have a long-lasting and positive impact on children’s development, learning abilities, and capacity to regulate their emotions.42