11. Blames others for their actions
A child who is using bullying behavior may be quick to blame others for his or her actions or problems. They don’t understand or accept the concept of accountability, according to Ellis.
12. Worries about reputation
Kids may be bullying if they are very competitive. They may worry about their reputation or popularity. The quest for higher social status may be contributing to bullying behavior.
13. Has trouble sleeping
Difficulty sleeping may be something both kids who bully and those who are bullied suffer from. A study by the University of Michigan found that kids who bully are twice as likely to have sleep problems. Students in elementary public schools, who were the subject of the study, had a higher risk for daytime sleepiness in particular. This is not to say that sleep problems cause bullying. But lack of sleep can contribute to a bad mood, which can make people meaner.
14. Gets in trouble in school
A call from the principal’s office usually fills a parent with dread, shock, and embarrassment. Whatever the incident, it may have been a one-time thing. But if the child gets sent to the principal’s office or to detention frequently, he or she may be bullying others.
15. Lives in a violent home
Children who bully — as well as their victims — are more likely to have been physically hurt by a family member or to have witnessed violence at home, according to a study by the Centers for Disease Control and Prevention and the Massachusetts Department of Public Health. If children see violence frequently, they are more likely to react with violence in tense situations. When violence is the model at home, kids tend to take out their own anger on other children.