This book provides a look at the social adjustments, interaction and family dynamics of siblings. The authors present current research including parent-child attachments; the influence of familial factors on child trauma symptoms in children exposed to intimate partner violence; sibling interactions and pro-social skills and antisocial behaviours during different stages of child development; birth order and risk preferences; twin and higher order multiple pregnancies in medically assisted reproduction; support for siblings of children with intellectual disabilities; and communicative functions of emotions in sibling relationships.