Summary: Paternal depression may contribute to adolescent depression and behavioral problems, regardless of whether or not the father and child are genetically related, researchers say.
Source: Penn State
Adolescent depression and behavior problems are on the rise and paternal depression may be contributing to this increase, regardless of whether the fathers and children are genetically related, according to new research from Penn State and Michigan State.
A lot of research focuses on depression within biologically related families, said Jenae Neiderhiser, Social Science Research Institute cofunded faculty member and distinguished professor of psychology and human development andfamily studiesat Penn State.
Now more information is becoming available for adoptive families and blended families.
The researchers looked at naturally occurring variations ingenetic relatednessbetween parents and theiradolescent childrenin the 720 families participating in the Nonshared Environment in Adolescent Development (NEAD) study, with over half of those families containing a child-rearing stepparent.
Mothers, fathers and children each answered questions to measure symptoms of depression, behaviors and parent-child conflict. The researchers then examined the association betweenpaternal depressionsymptoms and child behavioral symptoms in a series of models.
Neiderhiser and Alex Burt, professor of clinical science at Michigan State, along with their colleagues found paternal depression was associated withadolescent depressionand adolescentbehavior problemsregardless of whether the fathers and their children were genetically related.
The results pointed squarely to the environmental transmission of depression and behaviors between fathers and children, said Burt, who has been collaborating on projects with Neiderhiser since the early 2000s.
Additionally, we continued to see these associations in a subset of blended families in which the father was biologically related to one participating child but not to the other, which was an important confirmation of our results.
We also found that much of this effect appeared to be a function of parent-child conflict. These kinds of findings add to the evidence that parentchild conflict plays a role as an environmental predictor of adolescent behaviors.
According to Neiderhiser, while the results were expected, they also thought the effects onchildrens behavior and depression would be greater in parent-child pairs who were genetically related.
It would be great to do more studies on step and blended families, she said. They tend to be an underutilized natural experiment we could learn more from to help us disentangle the impacts of environmental factors and genetics on families.
Author: Press OfficeSource: Penn StateContact: Press Office Penn StateImage: The image is in the public domain
Original Research: Closed access.Illuminating the origins of the intergenerational transmission of psychopathology with a novel genetically informed design by S. Alexandra Burt et al. Development & Psychopathology
Abstract
Illuminating the origins of the intergenerational transmission of psychopathology with a novel genetically informed design
Although it is well known that parental depression is transmitted within families across generations, the etiology of this transmission remains unclear.
Our goal was to develop a novel study design capable of explicitly examining the etiologic sources of intergenerational transmission.
We specifically leveraged naturally-occurring variations in genetic relatedness between parents and their adolescent children in the 720 families participating in the Nonshared Environment in Adolescent Development (NEAD) study, 58.5% of which included a rearing stepparent (nearly always a stepfather).
Results pointed squarely to the environmental transmission of psychopathology between fathers and children.
Paternal depression was associated with adolescent depression and adolescent behavior problems (i.e., antisocial behavior, headstrong behavior, and attention problems) regardless of whether or not fathers and their children were genetically related.
Moreover, these associations persisted to a subset of blended families in which the father was biologically related to one participating child but not to the other, and appeared to be mediated via fatherchild conflict.
Such findings are not only fully consistent with the environmental transmission of psychopathology across generations, but also add to extant evidence that parentchild conflict is a robust and at least partially environmental predictor of adolescent psychopathology.
Read more from the original source:
Depression in Fathers and Children Linked, Regardless of Genetic Relatedness - Neuroscience News
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