Volume 42 of the Advances in Child Development and Behavior series includes 9 chapters that highlight some of the most recent research in the area. A wide array of topics are discussed in detail, including Loneliness in Childhood, The Legacy of Early Interpersonal Experience, The Relation Between Space and Math, and Producing and Understanding Prosocial Acts in Early Childhood. Each chapter provides in-depth discussions and this volume serves as an invaluable resource for Developmental or educational psychology researchers, scholars, and students.