 This category of risk factors associated with sibling abuse considers individual traits of the offender child and the victim child.For offender children, known individual risk factors include lack of empathy for victims, aggressive temperament, lower or higher self-esteem than peers, unmet personal needs for physical contact in emotion-deprived environments, experience of victimization, including by siblings, sibling care taking of younger brothers and sisters, and boredom.For victim children, a known risk factor is psychological distress such as anger, depression, and anxiety from violence victimization by siblings (linked to re-victimization).