Department of Psychology
Department of Psychology

New research by David Yeager published in “Child Development”

Tue, February 12, 2013
New research by David Yeager published in “Child Development”
David Yeager, Ph.D.

Teenagers from all walks of life who believe people can’t change react more aggressively to a peer conflict than those who think people can change. And teaching them that people have the potential to change can reduce these aggressive reactions.

Those are the findings of a new study published in the journal Child Development. The research was conducted at the University of Texas at Austin, Emory University, and Stanford University. 

Prior research has shown that children who grow up in hostile environments, such as high- violence neighborhoods, are more likely to interpret even minor offenses toward them as having been done on purpose. This interpretation leads them to respond aggressively. The researchers who carried out this study sought to determine whether teens in any environment (rich or poor, violent or nonviolent) could develop a belief—that people’s character traits are fixed and can’t change—that led them to react aggressively.

“Our past research showed that believing people’s traits are fixed leads teens to think the world is full of ‘good’ and ‘bad’ people, with nobody in between; they are then quick to classify people as one or the other,” according to David Yeager, assistant professor of developmental psychology at the University of Texas at Austin, the study’s lead investigator. “In our new research, we found that teens in this ‘fixed’ mindset, even after a minor offense like getting bumped in the hall or being left out of a game of catch, relegated peers to the ‘bad person’ group, decided that they had offended on purpose, and want aggressive revenge.”

Yeager and his colleagues first conducted eight studies with more than 1,600 eighth through tenth graders of different races and ethnicities in both wealthy and low-income schools around the United States. Teens reported their beliefs about change—for instance, whether bullies and victims are types of people who can’t change. Then they responded to situations of conflict or exclusion. Across the board, teens who believed people can’t change were more likely to think the offense was done on purpose and then desire aggressive revenge—for instance, saying they would want to “hurt them,” ‘get back at them,” or “punish them.”

Next, the researchers developed and tested a relatively brief intervention that taught the teens that people have the potential to change. Students read an article about the plasticity of the brain, read notes from older students describing how people are capable of change, and then wrote notes to future students on this topic to make the message stick. Then teens responded to an offense. The intervention reduced the teens’ tendency to see the offense as having been done on purpose, and reduced their desire for aggressive revenge, even eight months after the students took part.

--Press Release, Child Development

Link to An Implicit Theories of Personality Intervention Reduces Adolescent Aggression in Response to Victimization and Exclusion:

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