I dedicate this book to all the 'SIBLINGS'. The relation which can't be describe by words. The relationship between siblings is a very important relationship. ""The sibling relationship is one of the longest lasting relationships in most people's lives, and one of the most prevalent"". Although this relationship is almost always a friendly one during adulthood, the childhood and adolescent relationship is usually hostile. Sibling rivalries during adolescence and childhood usually occur because of a strong amount of jealousy towards a younger sibling who appears to be receiving the full amount of attention from the parents. The three most important factors that impact the sibling relationship are birth order, age, and the parent-child or parent-parent relationships. Birth order of siblings can play a huge role in explaining the aggression that some siblings have towards each other. Birth order is one's position in a family. For example, one is the first-born child or one is the middle child. According to Lorie M. Sutter, ""Through your position in the family (birth order) you develop your behavior pattern, way of thinking, and emotional response.