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Harsh Treatment by Parents Increases Antisocial Behaviors in Children

Harsh Parenting Can Fuel Kids’ Antisocial Behaviors

A new study of identical twins found that the child who experienced harsher behavior and less parental warmth was more aggressive and exhibited more callous-unemotional traits, such as a lack of empathy and a moral compass.

In a study of 227 identical twin pairs, researchers at the University of Pennsylvania, the University of Michigan and Michigan State University analyzed small differences in the parenting that each twin experienced to determine whether these differences predicted the likelihood of antisocial behaviors. They found that the twin who experienced stricter or harsher treatment and less emotional warmth from parents had a greater chance of showing aggression and callous-unemotional (CU) traits.

“Some of the early work on callous-unemotional traits focused on their biological bases, like genetics and the brain, making the argument that these traits develop regardless of what is happening in a child’s environment, that parenting doesn’t matter,” said Dr. Rebecca Waller, an assistant professor in Penn’s Department of Psychology, who led the study.

“We felt there must be something we could change in the environment that might prevent a susceptible child from going down the pathway to more severe antisocial behavior.”

The work is the latest in a series of studies from Waller and her colleagues using observation to assess a variety of aspects of parenting. The initial research, which considered a biological parent and child, confirmed that parental warmth plays a significant role in whether CU traits materialize.

A subsequent adoption study of parents and children who were not biologically related turned up consistent results.

“We couldn’t blame that on genetics because these children don’t share genes with their parents,” Waller said. “But it still didn’t rule out the possibility that something about the child’s genetic characteristics was evoking certain reactions from the adoptive parent.”

In other words, a parent who is warm and positive may have a hard time maintaining those behaviors if the child never reciprocates, she explained.

Knowing this led Waller and University of Michigan psychologist Dr. Luke Hyde to team with Dr. S. Alexandra Burt, co-director of the Michigan State University Twin Registry. Using 6- to 11-year-old participants from a large, ongoing study of twins that Burt directs, the team turned its attention to identical twins.

For 454 children — 227 sets of identical twins —  parents completed a 50-item questionnaire about the home environment. They also established their harshness and warmth levels by rating 24 statements such as “I often lose my temper with my child” and “My child knows I love him/her.”

The researchers assessed child behavior by asking the mother to report on 35 traits related to aggression and CU traits.

“The study convincingly shows that parenting — and not just genes — contributes to the development of risky callous-unemotional traits,” said Hyde, an associate professor in Michigan’s Department of Psychology. “Because identical twins have the same DNA, we can be more sure that the differences in parenting the twins received affects the development of these traits.”

According to Waller, a potential next step is to turn these findings into interventions for families trying to prevent a child from developing these traits or to improve troubling behaviors that have already begun.

“From a real-world standpoint, creating interventions that work practically and are actually able to change behaviors in different types of families is complicated,” she said. “But these results show that small differences in how parents care for their children matters.

“Our focus now is on adapting already-successful parenting programs to include specific interventions focused on callous-unemotional traits as well.”

Though an intervention with parents could succeed, the researchers stress that the work isn’t blaming parents for their child’s CU or aggressive behaviors.

“Our previous work with adopted children also showed that genes do matter, and so there is a back and forth,” Hyde said. “Some children may be more difficult to parent. The most important message is that treatments that work with parents likely can help, even for the most at-risk children.”

The researchers acknowledge some limitations to the study. For example, it skews heavily toward two-parent families, meaning the findings may not be as generalizable to single-parent homes. It also assesses parenting measures and twin behaviors based solely on parenting reports.

Despite these drawbacks, the researchers say the work broadens the understanding of how different forms of antisocial behavior, like aggression and callous-unemotional traits, emerge.

“This provides strong evidence that parenting is also important in the development of callous-unemotional traits,” Hyde said. “The good news is we know that treatments can help parents who may need extra support with children struggling with these dangerous behaviors.”

The study was published in the Journal of the American Academy of Child and Adolescent Psychiatry.

Source: University of Pennsylvania

Harsh Parenting Can Fuel Kids’ Antisocial Behaviors

Janice Wood

Janice Wood is a long-time writer and editor who began working at a daily newspaper before graduating from college. She has worked at a variety of newspapers, magazines and websites, covering everything from aviation to finance to healthcare.

APA Reference
Wood, J. (2018). Harsh Parenting Can Fuel Kids’ Antisocial Behaviors. Psych Central. Retrieved on November 17, 2018, from https://psychcentral.com/news/2018/10/14/harsh-parenting-can-fuel-kids-antisocial-behaviors/139475.html

 

Scientifically Reviewed
Last updated: 14 Oct 2018
Last reviewed: By John M. Grohol, Psy.D. on 14 Oct 2018
Published on PsychCentral.com. All rights reserved.