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Bullying: Overview

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Bullying is unwanted aggressive behavior by another person or group of people who are not the victim’s siblings or current dating partners. In bullying, there is always an observed or perceived power imbalance, and the aggression is repeated multiple times or is highly likely to be repeated. Bullying also includes cyberbullying, a type of aggression that is carried out through electronic means, such as through the Internet, e-mail, or mobile devices. People of all ages can be the victim of bullies. Bullying may take place at home, school, or work. With the advent of electronic aggression, bullying can occur almost anywhere at any time.

The NICHD supports and conducts research to understand bullying and its effects. Many studies include information about the prevalence of bullying, its mental and health effects, and trends in bullying patterns over recent years.

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Common Names

  • Bullying
  • Harassing
  • Terrorizing

Medical or Scientific Name

  • Bullying
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