Grounded in a relational view of infancy, this volume offers a comprehensive analysis of developmental, clinical, and social aspects of mental health from birth to age 3. Essential topics addressed include models of development, neurobiology, the family and cultural contexts of infant mental health, and frequently encountered disorders of infancy. Assessment and intervention are discussed in depth, with coverage of practitioner-based models of psychotherapy as well as programmatic approaches to prevention and early intervention. Also covered are important issues related to family and social policy, such as the effects on infant development of early child care and parental divorce.