culture

Babies cry in their own language

From Newsweek and several other magazines:

There had already been provocative research on what sounds a fetus can hear in the womb and what effect that has right after birth, with several research teams finding that newborns prefer their mothers’ voices over those of other people, as in studies such as this and this. That makes sense, since Mom’s voice is what a baby heard most for nine months. Newborns also prefer their native tongue to other languages for the same reason.

Now an intrepid team of scientists, three from Germany and one from France, has gone an intriguing step further: they have found that newborns cry in their native language. “We have provided evidence that language begins with the very first cry melodies,” says Kathleen Wermke of the University of Würzburg, Germany, who led the research.

The idea was to extend the existing findings about what sounds babies can perceive—their native language, their mother’s voice—to test what sounds they can create. Once the researchers had their recordings (no babies were harmed in the course of this research! All crying was spontaneous, due to hunger or thirst or general unhappiness rather than pain, as from having blood drawn), they set to work analyzing the cries’ melodic qualities.

French babies tended to cry “with a rising melody contour,” they will report in the December issue of the journal Current Biology, posted online Thursday. The cries sounded French: the pitch changed from low to high, rising toward the end of words as well as phrases within a sentence (though the final sound of a sentence has a lower pitch). In contrast, the German babies’ cries had falling melodic contours. They sounded German: the pitch fell from high to low, which is consistent with the sound of German’s falling melody contour, from the accented high-pitch syllable at the start of a phrase or word to the lower pitch at the end of a phrase. A French child says “papa,” while a German one says “papa.” There is, in short, “a tendency for infants to utter melody contours similar to those perceived prenatally,” write the scientists.

“The dramatic finding of this study is that not only are [newborns] capable of producing different cry melodies, but they prefer to produce those melody patterns that are typical for the ambient language they have heard during their fetal life, within the last trimester,” said Wermke. “Contrary to orthodox interpretations, these data support the importance of human infants’ crying for seeding language development.”

Read the full article at Newsweek

disease · school

Oh sure, blame the primates

Poor guys get in trouble for everything.

First a new strand of AIDS found in Gorillas (and a woman in Cameroon), and now the poor chimps are getting blamed for Malaria.

Seriously, people, can’t we take a little responsibility?
(total side note, but I mean it! Some student is suing her college because she can’t find a job. In a recession. After less than three months of searching. Grow up!)

culture

Update on Baboon buddies

So my last post dealt with baboons making male/female relationships. The authors of the paper basically said because the dudes weren’t getting sex out of the females they didn’t see what the males were getting out of it. The females did get harassed less.

WELL, I just happened to be listening to an archived episode of Radiolab, probably a couple of years old, and they interviewed Robert Sapolsky, author of Why Zebras Don’t Get Ulcers and a studier of all things stressful. Sapolsky primary animal of study is baboons. In this interview, Sapolsky discussed this same phenomenon, where males will hang out with females, not for sex, just for companionship. Sapolsky actually seemed to imply that the males got more out of the relationships than the femmes. Why:

1. The males WERE in fact having sex more frequently with females in this troop of baboons.
2. When a dominant male gets old and loses his status, he is in essence drummed out of the troop, about half the time fleeing to a new troop where he is still lower on the totem pole but less harassed overall. HOWEVER, the half that don’t leave the troop are the ones who formed friendships with the females.

Ha ha! Having females as your allies is a political and evolutionary good idea for baboons. So it works out well for everyone involved.

There are probably different cultures of baboon troops, but it’s nice to know that at least for some male baboons it pays to have female friends.

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Baboon buddies

Researchers recently found that baboons will have opposite gender friends, but they’re not sure why, particularly what the males get out of the male-female friendship. I love the BBC headline, that baboon females will “exploit” their male friends. Great attitude, guys…

“Male and female baboons form platonic friendships, where sex is off the menu.

Having a caring friend around seems to greatly benefit the females and their infants, as both are harassed less by other baboons when in the company of their male pal.

But why the males choose to be platonic friends remains a mystery.

The finding published in Behavioral Sociobiology and Ecology also suggests that male baboons may be able to innately recognise their offspring.”

The male buddies were not the genetic fathers, nor had they copulated with the female around the time the infant was conceived.

Nguyen, the baboon researcher, suggests “that by chaperoning a female in a platonic relationship, a male might advertise his parental skills to other females, who then might consider him a worthy partner. But as yet, there’s no evidence for this or any other reason why males become chaperones. However, for the females, the benefits of having a chaperone are clear.”

Females and their infants don’t get harassed as much when there’s a dude around.

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Why humans went hairless

A very cool blog from the New York Times explaining recent theories proposed as to why humans are the only hairless primate.

The new idea? To get rid of fleas!

I HATE fleas, so I say good riddance!

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The outer limits…of humans

I’ve been collecting some weird stuff that doesn’t necessarily correlate directly to humans and culture, but they all do in a roundabout, sideways, too-cool-to-not-mention sort of way.

For starters, some researchers have found evidence that humans have taste buds for calcium. I wonder if there is a difference between cultures who practically live off milk compared to those who don’t.

Also, there is a cool YouTube video about parasitic worms that can actually recreate or at least mimic the genes of their host insect to the extent that they can send messages to the insect’s “brain” and make the insects do what they want, including commit suicide by jumping into a body of water so the worm can escape, essentially turning the bug into a zombie. As the researcher mentions in the video, this has implications for human parasitic diseases (which I can’t remember right now but if you watch the video he will explain it better).

Getting back into the traditional “Anthropology” stuff, German anthropologists have been able to genetically trace bones from the Bronze Age to a pair of men living in a village nearby the cave where the bones were found, making this the longest family tree in history.

As a cool example of the power of motherhood and how much dogs have evolved to be co-habitants of humans, a dog in Argentina rescued a newborn baby abandoned in the ghettos/favelas. The dog was a new mother herself, and after the dog’s owner discovered the baby cuddled in with the pups, he alerted authorities and the baby’s 14-year-old mother came forward. Unfortunately the media attention is actually freaking the dog out a bit, so leave her alone!

Also, for all you star gazers out there, a Top 10 of ancient astronomy observatories throughout the world (interestingly, the Mayan pyramids made it on there, the Egyptian pyramids did not).

Finally, for all you visual or historical anthropologists, a cool article on the history of the daguerrotype, and links to other articles about cool photographic inventions.

behavior

News highlights from last week

Scottish penguin knighted as part of 30-year service to Norwegian military. Technically it’s the third penguin to serve as the Norwegian mascot, but still, well earned I’m sure (too bad it’s not an emperor penguin).

Cemetery remains of two different cultures separated by several thousand years found in the same spot in the Sahara Desert (apparently much greener once). One woman and her two kids were buried on a bed of flowers; how sweet is that? Awww…

Mayan portal to the world of the dead FOUND! No, really.

Roman empress’ head found too ( not the actual head, just the oversized marble carving of it).

Mothering style can turn on nurturing genes in female mice. First off, who knew there were genes for nurturing?

smell

Women on pill choose mates too close to home

A study, which is supported by research in the 90s, finds that women on the birth control pill will choose mates that have a similar smell make-up to themselves, which evolutionarily is a bad thing; in a normal hormonal stage, women choose guys with contrasting smells (major histocompatibility complex (MHC) gene-produced odor to be more precise) because essentially it means that the woman is not procreating with a distant relative and her offspring is more genetically fit, and will also recognize more smells as familiar and be more open to people. Once women go off the pill, apparently they are more likely to leave or cheat on the similarly-smelling partner.

At first this totally blew my mind! I knew that smell played a MAJOR role in mate selection, but the fact that the pill can mess with one’s sense of smell and ability to smell others to the point of evolutionary malfunction is amazing. Although upon further analysis it makes perfect sense, since the pill is a hormone replacement, and there is already plenty of evidence that a woman’s hormonal cycle affects her sense of smell. Women have a hard time becoming sommeliers (wine tasters) because their sense of smell (and therefore taste) changes throughout her menstrual cycle so they are considered not as reliable tasters as men. Many women I know couldn’t walk down the soap or seafood aisle at a grocery store when they were pregnant because their sense of smell was just too sensitive.

It makes me wonder what this means for women who have been on the pill from the time they were teenagers until they decide to have their first kid. Obviously this doesn’t mean that every woman who meets her mate on the pill will dump him as soon as she’s off (I’ve been with my guy for five terrific years), but the implications of this are fascinating.

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Innate victory pose

Researchers compared congenitally blind athletes to seeing athletes and found both groups “puff up” or open themselves up when they win (outstretched arms and shoulders, big smile facing up and out), and cower and close inward when they lose, implying the behavior is an innate tendency of humans.
This study made me really curious about my husband’s “bellowing,” which he is actually known for internationally: when he accomplishes a large physical feat like scaling a wall or landing a jump, he cries a mighty bass-toned yawp… okay, it’s more of a war bellow, like he has defeated an elk in hand to hoof combat. But this study has made me wonder if his mighty yawp is the same primal instinct as the “warrior pose.” Jumping up and down and squealing, “I win, I win” isn’t going to scare away many other predators or challengers: roaring like a grizzly bear on the other hand and making yourself big is going to make a lot of critters think twice about coming after you, including the grizzly bear.
This also leads me to wonder if dominant males (of any primate species) celebrate their victories more often or louder than less dominant males. Obviously behavior is going to be curtailed by social expectations (Japanese and Scottish Highland cultures very much discourage individualism and show-offiness, for example), but it seems plausible that a dominant male would (a) win hand to hoof combats more often and so have more opportunity for bellowing, and (b) be more vocal and more physical in his reaction to that victory. This in turn would intimidate a lot of non-dominant folks and would discourage any challengers. *feminist note*: I’m wondering mostly about dominant males and their victor display because females don’t typically puff up or roar to show their dominance over others. They will yell, and are violent, but at least the wolf, chimp, and human studies I’ve seen point to quicker, more subtle expressions of dominance from females.

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Bombardment of Anthro News

July has been busy and I’ve been storing them up, so here goes:

In 2007, thai police officers had to start wearing Hello Kitty armbands if they were caught doing something against the law. I want to know if they’re still forced to do that (my suspicion is no). Anyone with the answer to that gets a brownie (point)!

Mexican mummies were stressed out too; ulcer bacteria found in mummy tummies.

90% of people can sing, really, according to this study.

If there are more male lemurs than female lemurs in a troop, female lemurs have a better chance of being the dominant leader of the whole group.

An interesting study of normal, middle-class people who live frugally, including by dumpster diving.

Archaeologists in Jerusalem and Korea have both found sites that have the tuberculosis bacterium and hope to use this ancient specimen (thousands of years old, we’re talking) to help fight modern TB.

And finally, just for kicks, a study has found that guys’ fertility drops off at a certain age, not just in women, so men too could be susceptible to a biological clock.