Nature-Nurture
gregladen | March 15, 2016The latest National Geographic Roundtable Question: Survivor-style television has grown increasingly popular over the years and done a great job of illustrating our brain's fascinating built-in survival instinct. What role do you think our ancestral instincts play today in helping us survive, thrive and accomplish our goals? How much of our ancestral survival instincts are innate verses learned?
First, the innate vs. learned part of the question. This is a false dichotomy. We have evolved to learn. We probably have "built in" mechanisms to learn new things. This means that when we have…
gregladen | September 2, 2015Jonathan Marks' new book is called "Tales of the Ex-Apes: How We Think about Human Evolution"
I've got to tell you that when I first saw the title of this book, the letters played in my head a bit. Tails of the Ex-Apes. That would be funny because apes don't have tails. Or Tales of the Exapes. Pronounced as you wish. Perhaps in an Aztec accent.
Anyway...
Jon Marks is a colleague and a friend from way back. He is a biological anthropologist who has engaged in critical study of central biological themes, such as genetics, and he's said a few things about race. He wears black, often does…
gregladen | July 7, 2011Behaviors are not caused by genes. There is not a gene that causes you to be good, or to be bad, or to be smart, or good at accounting, or to like bananas. There are, however, drives. "Drives" is a nicely vague term that we can all understand the meaning of. Thirst and hunger are drives we can all relate to. In fact, these drives are so basic, consistent and powerful that almost everyone has them, we share almost exact experiences in relation to them, and they can drive (as drives are wont to do) us to do extreme things when they are not met for long periods of time. While eating…
gregladen | January 26, 2011There are human universals. There, I said it. Now give me about a half hour to explain why this is both correct and a Falsehood. But first, some background and definition.
Most simply defined, a human universal is a trait, behavior or cultural feature that we find in all human societies. Men are always on average larger than women. All humans see the same exact range of colors because our eyes are the same. The range of emotions experienced by people is the same, and appears in facial expressions and other outward affect, in the same way across all humans.
The term "Human Universal"…
gregladen | October 12, 2010Or, when the hunting season is closed, watch teh game (the guys), or when there are no sales, admire each other's shoes (the gals)?
This is, of course, a parody of the sociobiological, or in modern parlance, the "evolutionary psychology" argument linking behaviors that evolved in our species during the long slog known as The Pleistocene with today's behavior in the modern predator-free food-rich world. And, it is a very sound argument. If, by "sound" you mean "sounds good unless you listen really hard."
I list this argument among the falsehoods, but really, this is a category of argument…
gregladen | April 25, 2009This was not an intensive bird watching day. This was a day driving to the cabin, sitting in the cabin writing, looking out the window, driving to run an errand, going to town for dinner, sitting in the cabin looking out the window some more, etc.
But the birds insisted on performing. So I thought I'd give you a list.,
En route north from the Twin Cities:
Two probable trumpeter swans heading west.
A flock of about 45 cormorants heading north. Leech Lake look out!
Near Fort Ripley: Rough Legged Hawk?
Blue Jay
Nisswa, overlookng Round Lake: Bald Eagle in tree
Lesser Scaup (small flock)…
gregladen | February 18, 2009Nature, the publishing group, not the Mother, has taken Darwin's 200th as an opportunity to play the race card (which always sells copy) and went ahead and published two opposing views on this question: "Should scientists study race and IQ?
The answers are Yes, argued by Stephen Cici and Wendy Williams of the Dept of Human Development at Cornell, and No, argued by Steven Rose, a neuroscientist at Open University.
I would like to weigh in.
The real answer, as is so often the case, is "You dumbass, what kind of question is that? Think about it further and rephrase the question!"
But I don't…
gregladen | October 26, 2008The lake is icy-green and in the distance almost blends into the sky through a fast moving fog bank. The bald eagles (a pair and one offspring) are up to something in the back, one of them making swings over the bay and then back into the yard where they are vocalizing quite a bit. The pair of loons that always nests on the point a few hundred meters across the bay have changed to their winter plumage and are actively feeding just outside the cabin, and have been for two days. This year, they did not successfully raise an offspring, which is unusual. so we didn't get to see the cute baby…
gregladen | October 24, 2008There is a new paper, just coming out in Proceedings of the National Academy of Sciences, that explores the idea that humans have undergone an increased rate of evolution over the last several tens of thousands of years.
By an increased rate of evolution, the authors mean an increased rate of adaptive change in the genome. By recent times, the authors mean various things, depending on which part of the analysis you examine, and depending on what is meant by "increased." ... In other words, the timing of an event that is not really an event (but rather a change in rate of something) is hard…
gregladen | August 25, 2008They say Lake Itasca is the source of the Mississippi. This is why there is a big state park surrounding the lake, a park that preserves some beautiful old forest despite the best efforts of 19th century lumberjacks to cut it down.
Amanda next to the tallest white pine tree in Minnesota I've been to Itasca a number of times, and I've even done archaeological research there (which didn't turn out to be very interesting). But when I went to Itasca last week, it was my first visit with no work agenda, and I got to spend more time poking around and seeing the sights. I was visiting because…
gregladen | February 12, 2008"Disease" is a big word. I'd like to address this question by focusing on the difference, or lack of difference, between a poison, a disease, and a yummy thing to eat. It turns out that they may all be the same. Yet different.
Phenylketonuria (fee-null-keet-o-noo-ria), mercifully also known as "PKU" (pee - kay - you) is a disorder in which the amino acid phenylalanine is not broken down by an enzyme (phenylalanine hydroxylase) and thus accumulates in the body as phenylpyruvic acid.
This is bad because phenylpyruvic acid interferes with normal development of neural tissues.
In western…
gregladen | February 8, 2008Last night, the Campus Atheists, Skeptics and Humanists club (C.A.S.H.) presented a debate between PZ Myers and Loyal Rue on the question: Can religion and science co-exist? I witnessed this event and would like to tell you what happened.
I want to begin with a message to PZ Myers: Thank you, PZ, for your service! There are a lot of people in the twin cities who could engage in an interesting debate on religion, atheism, evolution, creationism, etc. and do an OK job, but none others have the experience and intellectual preparation (to do an excellent job) and the draw (to guarantee lots…
gregladen | December 10, 2007There is a new paper, just coming out in Proceedings of the National Academy of Sciences, that explores the idea that humans have undergone an increased rate of evolution over the last several tens of thousands of years.
By an increased rate of evolution, the authors mean an increased rate of adaptive change in the genome. By recent times, the authors mean various things, depending on which part of the analysis you examine, and depending on what is meant by "increased." ... In other words, the timing of an event that is not really an event (but rather a change in rate of something) is hard…
gregladen | November 15, 2007All of the following stories have one thing in common: They relate to the Nature-Nurture issue.
Environment plays key role in children's readiness for school from PhysOrg.com
Early school success seems to depend largely on children entering school ready to learn, and many policy initiatives have highlighted the importance of preparing children for school entry. A new study finds that children's environment plays a major role in their readiness for school, suggesting that intervention could help boost readiness in at-risk youngsters.
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Family conditions may affect when girls…