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Another factor that contributes to sibling rivalry is the individual personality and temperament of each sibling. Children, like adults, have unique personalities, strengths, and weaknesses. These differences can create tension and conflict between siblings, particularly if one sibling feels that they are being overshadowed or unfairly compared to their brother or sister. Moreover, birth order can also play a significant role in shaping sibling relationships. For instance, firstborns may feel a sense of responsibility and ownership, while younger siblings may feel like they are living in their shadow.