The Child Development and Behavior Branch (CDBB), within the Center for Research for Mothers and Children, has grown in the past four years from supporting five programs to supporting seven, with a concomitant increase in the number of grants of more than 50 percent, and a corresponding increase of more than 87 percent in overall funding. During this time, the CDBB has continued to fund high-quality research on all aspects of child development and human behavior, to vigorously identify gaps in research knowledge, and to develop new initiatives to close these gaps. This report describes how the Branch goes about identifying and addressing gaps and the areas of science managed within each program and provides an overview of major initiatives accomplished or under way. The CDBB continues to emphasize interdisciplinary research, both in the design and implementation of studies, and in training the next generation of developmental scientists. Moreover, the Branch strives to increase research support for new and innovative methodologies to measure the development of complex cognitive, linguistic, social, perceptual, biological, genetic, environmental, and educational variables relevant to human maturation across the life span. The following are appended: (1) Branch Solicitations; (2) Branch Publications; and (3) Branch Personnel.