Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Health & Parenting

Font Size

Children May Learn Bullying by Example

Environment Plays a Major Role in Shaping Children's Social Behavior

WebMD Health News

July 13, 2005 -- Bad genes may make a brute, but it takes a bad environment to make a bully.

A new study shows that it's bad influences more so than genes that are behind making children bullies.

Researchers say the results show that the type of social aggression that makes young girls and boys hurt each other with social snubs and snobbery may have very different roots than the type of physical aggression involved in picking fights.

Seeking Out the Source of Bullying

In the study, researchers analyzed the roots of social and physical aggression in a group of 234 6-year-old twins.

Researchers had the girls' peers and teachers rate their physical and social aggressiveness, and their results showed that the twins' shared genes explained most of the differences in physical aggression, but relatively few of the differences in social aggression.

For example, shared genes accounted for about 50%-60% of the variation in physical aggression. But genetics only accounted for about 20% of the differences in social aggression.

Instead, shared or unique environmental factors appeared to explain most of the variation in social aggression (60%).

Researchers say it's the first study to show that social aggression seems to be determined to a lesser extent by genetic factors and to a greater extent by environmental factors than physical aggression.

The study also showed that children reported to have high levels of physical aggression were more likely to become socially aggressive.

Researchers say those findings support the notion that aggressive behaviors passed down through the genes may be initially expressed in physical means, such as throwing punches, and later replaced by socially aggressive behaviors, such as bullying.

"Whether and when this developmental shift occurs, however, may depend on the extent to which the child is exposed to an environment that specifically promotes the use of social aggression," says researcher Mara Brendgen of the University of Quebec in Montreal, in a news release.

"Our results have important implications for preventive interventions," she says, "as they suggest that reducing physically aggressive behavior at an early age might also help prevent the development of social aggression in young children." she says.

Today on WebMD

Girl holding up card with BMI written
Is your child at a healthy weight?
toddler climbing
What happens in your child’s second year.
father and son with laundry basket
Get your kids to help around the house.
boy frowning at brocolli
Tips for dealing with mealtime mayhem
mother and daughter talking
child brushing his teeth
Sipping hot tea
Young woman holding lip at dentists office
Which Vaccines Do Adults Need
rl with friends
tissue box
Child with adhd