This study analyzes major federal programs designed to provide services to children, from birth through age 2, who have developmental delays or a high probability of developmental delays, and their families. Programs were selected based on their provision of education or health-related services to infants and toddlers with handicaps and their families, and on the relevance of the program to policymakers working with Part H of Public Law 99-457, the Education of the Handicapped Act Amendments, 1986. The digest includes such programs as those legislated by the Education of the Handicapped Act, Head Start Act, Developmental Disabilities Assistance and Bill of Rights Act, and Bilingual Education Act. The study also contains a comparative analysis component, which compares the statutory language of the programs for their consistency or conflict with each other and with requirements of Part H. This section assesses the programs in seven areas: identification and evaluation; individualized service plan; case management services; parent training; procedural safeguards; advisory council; and other. A digest of selected provisions of 25 major federal programs affecting infants and toddlers with handicaps and their families is presented in an appendix. (JDD)