Oct 07, 2014 05:17 AM EDT
It is not only prenatal drug exposure, but also conditions related to drug use that can influence negative behavior in children, according to a new study from the University at Buffalo's Research Institute on Addictions.
In examining the long-term effects of cocaine use during pregnancy in a sample of low-income, cocaine-exposed and non-exposed families, researchers found that a mother's harshness toward her child during mother-child interactions at 2 years of age is one of the strongest predictors of problem behaviors in kindergarten, such as fighting, aggression and defiance.
Rina Das Eiden, PhD, the study's principal investigator, is conducting a multi-year study on the direct and indirect effects of prenatal drug use, following more than 200 mother and child pairs. It is funded by the National Institute on Drug Abuse.
Maternal harshness, such as threats of physical discipline, can be influenced by drug use. Animal studies have shown that prenatal cocaine use can affect parenting by lowering the bonding hormones mothers usually experience after birth, resulting in less emotional engagement with the child.
"Although prenatal cocaine exposure clearly can have negative health effects on children, the behavior problems may not only be due to what happens in the womb, but also to the effects of cocaine use on the mother," Eiden says. "Higher maternal harshness in cocaine-using mothers could also be due to other unmeasured variables, such as the mothers' own childhood experiences.
"Women who use cocaine have a harder time helping their children learn to self-regulate their behavior in the preschool years, which can lead to more negative behavior in kindergarten," she says.
Other risks factors shown to negatively affect behavior of all children in this low-income sample are a higher likelihood of hunger and living in communities that regularly experience violence.
Eiden says parenting interventions in high-risk family situations while children are young may help reduce maternal harshness and promote self-control in children.
The study, published in a recent edition of Psychology of Addictive Behaviors, was co-authored by Claire Coles, PhD, Emory University School of Medicine; Pamela Schuetze, PhD, SUNY Buffalo State; and Craig Colder, PhD, UB professor of psychology.
RIA is a research center of the University at Buffalo and a national leader in the study of alcohol and substance abuse issues. RIA's research programs, most of which have multiple-year funding, are supported by federal, state and private foundation grants. Located on UB's Downtown Campus, RIA is a member of the Buffalo Niagara Medical Campus and is a key contributor to UB's reputation for research excellence. To learn more, visit buffalo.edu/ria.
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