Primates Gorillas




DADDY DEAREST.


Father’s Day Salutes

the world’s dads, but it takes

science to explain why some aren’t so great!


By: Sarah Blaffer,

with Mary Batten

 

 

 

THE FOLKS AT HALLMARK ARE GOING TO HAVE

  A VERY GOOD DAY ON JUNE 17. 2007.

 

That’s when more than 100 million of the company’s ubiquitous cards will be given to the 66 million dads across the U.S. in observation of Father’s Day.

 

Such a blizzard of paper may be short of the more than 150 million cards sold for Mother’s Day, but it’s still quite a tribute. What’s less clear is whether dads at least as a group----—have done a good enough job to deserve the honor. Worldwide, 10 % to 40 % of children grow up in households with no father at all.

 

In the U.S., more than half (52 %) of divorced fathers lose contact with their kids within a few years. By the end of 10 years, as many as two-thirds (66 %) of them have drifted out of their children’s lives completely..

 

 According to a 1994 study by the Children’s Defense Fund, men are more likely to default on a child-support payment (49 %) than a used-car payment (30/o). Even fathers in intact families spend a lot less time focused on their kids than they think: in the U.S. fathers average less than an hour a day (up from 20 minutes a few decades ago), usually squeezed in after the workday.

 

Anthropologists are trying to figure out why. Homo sapiens produces the most slowly maturing young of all mammals. Among foraging.. humans, children need 19 years and consume 13 million calories before producing. more food for their community than they take from it, according to research by anthropologist Hillard Kaplan.

 

You’d think fathers would be hardwired to provide for such needy offspring, and yet there is more variation in fathering styles across human cultures than among all other species of primates combined.

 

Many of our primate kin are far better fathers than we are (investigators at the California primate center discovered that baby titi monkeys are in the arms of their fathers for as much as 90 % of daylight hours); many are far worse . But all are at least consistent within their species. Why does paternal care in our species vary so much?

 

One thing that draws a human male to a child of his is that, hormonally speaking, men are a lot more similar to women than many of us realize, particularly during the >critical survival period approaching a child’s birth and its infancy.

 

As in some other mammalian species, human males are known to have high levels of prolactin (a hormone usually associated with lactating mothers) toward the end of a partner’s pregnancy.

 

Canadian biologist Katherine Wynne-Edwards and psychologist Anne Storey have shown that the similarities don’t stop there. New or expectant fathers holding either their baby or a doll wrapped in a blanket that recently held—and still smells of a newborn experienced a rise in prolactin and cortisol (a well-known stress hormone associated with mothering) and a drop in testosterone.

 

When the men listened to a tape of a crying newborn and were shown a videotape of a newborn struggling to nurse, the ones who reported the greatest urge to comfort the baby were the ones whose hormone levels had changed the most.

 

But dads have to spend time close to babies for hormones to kick in, and this hasn’t always been possible. Today we take child survival for granted, but in traditional societies, 40 % of offspring might die before age 5. To keep infants safe, it made sense for them to be held at all times. With Mom often caring for more than one offspring and Dad busy rustling up food, the job sometimes had to be outsourced to grandmothers, aunts and others.

 

Among some West African Mandinka, the help of a maternal grandmother has been linked with a halving of the under-five mortality rate. Similar benefits were shown in Finnish farming communities in the 18th century.

 

African parents still counsel a marriageable son, “First find yourself a good mother.” They are talking about his future mother-in-law, not his future wife.

 

It was this cooperative system that allowed mothers to have more babies than they could support and fathers to vary in how they cared for them. The politicized notion of the nuclear family aside, a mother and father raising children alone was typically a temporary and often less than optimal phase for our ancestors.

 

None of this gives modem fathers who neglect their kids an evolutionary pass. Indeed, some studies suggest that even having one full time dad might not be enough. Among many traditional sodeties across South America, people subscribe to the folk wisdom that any man with whom a woman has had sex in the 10 months before giving birth makes some biological contribution to the fetus growing inside her. Even the woman’s official husband accepts this and any possible father is welcome to assist—discreetly--—-in providing care for the child.

 

Research by anthropologist Steve Beckerman and his team suggests that the optimal number of fathers is two, with 80 % of children in the Bari tribe of Venezuela who have two male providers surviving to 15, compared with 64 % among those with only one.

 

Few modern fathers would like such an arrangement, but they hardly need to. Given the right combination of chemistry and culture, good fathering is a varied and highly sustainable resource—one that’s just waiting to be tapped.

 

                                                                                  Hrdy is professor emerita of

                                                                                  anthropology at U. C. Davis,

                                                                                  and author of Mother Nature

SOURCE:

TIME Magazine

June 18, 2007 (Pgs. 60-61)



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