Loneliness is experienced by children, adolescents and adults across varied cultures. In the early 1960s and 1970s, some authorities in the field of psychology did not believe that children experienced loneliness. This book ushers in a new wave of theory and research examining the phenomena of loneliness during childhood and adolescence. The book represents a thorough examination of the topic: the chapters range from the role of attachment in children's loneliness, differences between being alone and loneliness, the significance of divided self and identity achievement in adolescents' loneliness, and the link between loneliness and maladjustment during adolescence. This volume should stimulate research into loneliness during childhood and adolescence for many years to come.