Twins are nature's living laboratories. Through them we are able to uncover new information concerning the genetic and environmental factors affecting who we ar

A groundbreaking study of twins brings together the latest scientific research and case studies to explore the complexities of human behavior and development as

"[A] stunning, deeply researched, and gracefully written social history." -- Leslie Schwalm, University of Iowa This study of women in antebellum Charleston, So

A leading expert on twins delves into the stories behind her research to reveal the profound joys and real-life traumas of 12 remarkable sets of twins, triplets