The 13 chapters of this text focus on the complex development issues and interdisciplinary service needs of infants and young children at risk and their families. The text is organized into four sections on: developmental and intervention principles, identification and assessment, developmental issues, and early intervention. Chapter titles and authors are: (1) "Early Transactions: The Developmental Context for Infants Whose Development Is Atypical" (Marci J. Hanson); (2) "Developmental Principles and Their Implications for Infants Who Are At Risk and/or Disabled" (Michael Lewis); (3) "Prenatal Causes of Atypical Infant Development" (Lucy S. Crain and Barbara Bennett); (4) "Infants Born At Risk" (Peter A. Gorski and Kathleen A. VandenBerg); (5) "Assessing Infants: Child and Family Issues and Approaches" (Eleanor W. Lynch); (6) "Behavioral Competencies and Outcomes: The Effects of Disabilities" (Marci J. Hanson and others); (7) "Early Interactions: The Family Context" (Marci J. Hanson); (8) "Social Development" (Mary K. Rothbart); (9) "Learning and Cognition during Infancy" (Craig T. Ramey and others); (10) "Communication and Language Development in Infants and Toddlers" (M. Jeanne Wilcox and others); (11) "Motor Development" (Linda Fetters); (12) "Early Intervention: Models and Practices" (Marci J. Hanson); and (13) "Early Intervention Goals and Outcomes" (Marci J. Hanson). (Individual chapters contain references.) (DB)