Story from the Wall Street Journal. (H/T Andrew)
Dr. Braun’s group found that at 21 days, the fatherless animals had less dense dendritic spines compared to animals raised by both parents, though they “caught up” by day 90. However, the length of some types of dendrites was significantly shorter in some parts of the brain, even in adulthood, in fatherless animals.
“It just shows that parents are leaving footprints on the brain of their kids,” says Dr. Braun, 54 years old.
The neuronal differences were observed in a part of the brain called the amygdala, which is related to emotional responses and fear, and the orbitofrontal cortex, or OFC, the brain’s decision-making center.
[…]The balance between these two brain parts is critical to normal emotional and cognitive functioning, according to Dr. Braun. If the OFC isn’t active, the amygdala “goes crazy, like a horse without a rider,” she says. In the case of the fatherless pups, there were fewer dendritic spines in the OFC, while the dendrite trees in the amygdala grew more and longer branches.
A preliminary analysis of the degus’ behavior showed that fatherless animals seemed to have a lack of impulse control, Dr. Braun says. And, when they played with siblings, they engaged in more play-fighting or aggressive behavior.
In a separate study in Dr. Braun’s lab conducted by post-doctoral researcher Joerg Bock, degu pups were removed from their caregivers for one hour a day. Just this small amount of stress leads the pups to exhibit more hyperactive behaviors and less focused attention, compared to those who aren’t separated, Dr. Braun says. They also exhibit changes in their brain.
The basic wiring between the brain regions in the degus is the same as in humans, and the nerve cells are identical in their function. “So on that level we can assume that what happens in the animal’s brain when it’s raised in an impoverished environment … should be very similar to what happens in our children’s brain,” Dr. Braun says.
- Scientists create sperm and eggs from embryonic stem cells
- Less than half of 7 to 21 year old women think marriage precedes child-bearing
- Marriage under attack by the left in Australia and India
- How socialism undermines the traditional family in Sweden
- How feminism is opposed to chivalry, marriage and fathers
- Atheist congressman introduces bill to force states to allow homosexual adoption
- Safe schools czar says respect for homosexuality begins in kindergarten
- What causes women to become single mothers, and how are children affected?
- Which family configuration is best for raising children?
- Why did 77% of young unmarried women vote for Obama in 2009?
- Obama vows to repeal Defense of Marriage Act in speech to gay activists
- Jennifer Roback Morse evaluates the economics of no-fault divorce
- New study shows that children of working mothers live unhealthier lives
- New study explains the best way for young people to avoid sexual risks
- Obama praises non-traditional families on National Family Day
- Has the decline of chastity and courtship hurt young people?
- Canadian study suggests how parents can influence children’s sexual choices
- Twenty-one reasons why marriage matters
- The latest podcasts from Dr. Jennifer Roback Morse
- New Scientist article shows why fathers are necessary for children’s well-being