Development in Infancy reflects many new discoveries that have transformed our understanding of infants and their place in human development, with an emphasis on 21st century research. Organized topically, the book covers physical, perceptual, cognitive, language, emotional, and social development, in addition to describing theories of development, contexts of development, research methods, and implications of research in infancy for social policies and interventions. Key issues in infancy studies-those having to do with how nature and nurture transact and with interrelations among diverse domains of development-are woven throughout the book. The text also emphasizes infancy as a unique stage of the life cycle. The new edition features new key point summaries at the end of most sections, definitions of boldfaced terms in the margins, and invitations to engage in retrieval practice at the end of each chapter. Each chapter also features Set for Life? text boxes that explore events and developments in infancy that reverberate in later development. This edition also features a new full-color design and over 100 figures, tables, and photos. The text is written in a clear and engaging style and is approachable for students with varying academic backgrounds and experiences. Development in Infancy is the authoritative text for undergraduate and graduate courses on infant development or early child development taught in departments of psychology, child development, education, nursing, and social work. The text is supported by Support Material that features a robust set of instructor and student resources.