Do Black Babies have Blue Eyes?

Short answer: No.

Some of my baby books make claims like, “Babies are born with blue or grey eyes, most of which gradually darken during their first year.” Some go so far as to claim that all babies are born with blue eyes.

This got me curious: what about Black / African American babies? Are they also born with blue/grey eyes which darken with time? Or were my books over-generalizing from a sample population composed primarily of whites?

The idea isn’t totally crazy. After all, I’ve observed plenty of Caucasian children’s eyes go from blue to brown. Pretty much all infants are born with less melanin than their parents, just because fetuses don’t need protection from sunlight.

After much wondering, I remembered that this is the Internet Age and that people post pictures of their babies online and I can just look up pictures of African Newborns and look at their eyes. Here’s a photo of a sweet Uganadan baby with brown eyes; if you scroll down, this article has a photo of a baby boy with black eyes; here’s an African American baby with brown eyes. (I’m just linking because I try not to steal people’s baby photos.)

To be fair, not all of these photos are necessarily of newborns, but could be somewhat older babies, but this is a process that is supposed to happen over the course of several months to a year, not days.

And while some of these infants do have a greyish or bluish tint to their eyes, the overall color is still brown, not blue.

I suppose I should look up photos of Asian babies while we’re at it.

*Googles*

And… they have brown eyes.

There you go, folks. Asian and African babies have brown eyes, not blue.

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Musical Mystery

Singer Tom Jones, famous recipient of ladies’ panties

There are three categories of supersars who seem to attract excessive female interest. The first is actors, who of course are selected for being abnormally attractive and put into romantic and exciting narratives that our brains subconsciously interpret as real. The second are sports stars and other athletes, whose ritualized combat and displays of strength obviously indicate their genetic “fitness” for siring and providing for children.

The third and strangest category is professional musicians, especially rock stars.

I understand why people want to pass athletic abilities on to their children, but what is the evolutionary importance of musical talent? Does music tap into some deep, fundamental instinct like a bird’s attraction to the courtship song of its mate? And if so, why?

There’s no denying the importance of music to American courtship rituals–not only do people visit bars, clubs, and concerts where music is being played in order to meet potential partners, but they also display musical tastes on dating profiles in order to meet musically-like-minded people.

Of all the traits to look for in a mate, why rate musical taste so highly? And why do some people describe their taste as, “Anything but rap,” or “Anything but country”?

Mick Jagger and Chuck Berry

At least when I was a teen, musical taste was an important part of one’s “identity.” There were goths and punks, indie scene kids and the aforementioned rap and country fans.

Is there actually any correlation between musical taste and personality? Do people who like slow jazz get along with other slow jazz fans better than fans of classical Indian? Or is this all compounded by different ethnic groups identifying with specific musical styles?

Obviously country correlates with Amerikaner ancestry; rap with African American. I’m not sure what ancestry is biggest fans of Die Antwoord. Heavy Metal is popular in Finno-Scandia. Rock ‘n Roll got its start in the African American community as “Race Music” and became popular with white audiences after Elvis Presley took up the guitar.

While Europe has a long and lovely musical heritage, it’s indisputable that African Americans have contributed tremendously to American musical innovation.

Here are two excerpts on the subject of music and dance in African societies:

source: A Voyage to Senegal: The Isle of Goreé, and the River Gambia by  Michel Adanson, Correspondent of the Royal Academy of Sciences

and:

source: Africana: The Encyclopedia of the African and African American Experience Aardvark-Catholic. Vol. 1
Elvis’s pelvis, considered too sexy for TV

Both of these h/t HBD Chick and my apologies in advance if I got the sources reversed.

One of the major HBD theories holds that the three races vary–on average–in the distribution of certain traits, such as age of first tooth eruption or intensity of an infant’s response to a tissue placed over its face. Sub-Saharan Africans and Asians are considered two extremes in this distribution, with whites somewhere in between.

If traditional African dancing involves more variety in rhythmic expression than traditional European, does traditional Asian dance involve less? I really know very little about traditional Asian music or dance of any kind, but I would not be surprised to see some kind of continuum affected by whether a society traditionally practiced arranged marriages. Where people chose their own mates, it seems like they display a preference for athletic or musically talented mates (“sexy” mates;) when parents chose mates, they seem to prefer hard-working, devout, “good providers.”

Natasha Rostova and Andrei Bolkonsky, from War and Peace by Tolstoy

Even in traditional European and American society, where parents played more of a role in courtship than they do today, music still played a major part. Young women, if their families could afford it, learned to play the piano or other instruments in order to be “accomplished” and thus more attractive to higher-status men; young men and women often met and courted at musical events or dances organized by the adults.

It is undoubtedly true that music stirs the soul and speaks to the heart, but why?

 

Do Chilblains Affect Blacks More than Whites?

toes afflicted with chilblains
toes afflicted with chilblains

While tromping through a blizzard, seeking insight into circum-polar peoples, I discovered a condition called chilblains. The relevant Wikipedia page is rather short:

Chilblains … is a medical condition that occurs when a predisposed individual is exposed to cold and humidity, causing tissue damage. It is often confused with frostbite and trench foot. Damage to capillary beds in the skin causes redness, itching, inflammation, and sometimes blisters. Chilblains can be reduced by keeping the feet and hands warm in cold weather, and avoiding extreme temperature changes. Chilblains can be idiopathic (spontaneous and unrelated to another disease), but may also be a manifestation of another serious medical condition that needs to be investigated.

The part they don’t mention is that it can really hurt.

The first HBD-related question I became interested in–after visiting a black friend’s house and observing that she was comfortable without the AC on, even though it was summer–is whether people from different latitudes prefer different temperatures. It seems pretty obvious: surely people from Yakutsk prefer different temperatures than people from Pakistan. It also seems easy to test: just put people in a room and give them complete control over the thermostat. And yet, I’d never heard anyone discuss the idea.

Anyway, the perfunctory Wikipedia page on chilblains mentioned nothing about racial or ethnic predisposition to the condition–even though surely the Eskimo (Inuit) who have genetic admixture from both ice-age Neanderthals and Denisovans:

“Using this method, they found two regions with a strong signal of selection: (i) one region contains the cluster of FADS genes, involved in the metabolism of unsaturated fatty acids; (ii) the other region contains WARS2 and TBX15, located on chromosome 1.” …

“TBX15 plays a role in the differentiation of brown and brite adipocytes. Brown and brite adipocytes produce heat via lipid oxidation when stimulated by cold temperatures, making TBX15 a strong candidate gene for adaptation to life in the Arctic.” …

“The Inuit DNA sequence in this region matches very well with the Denisovan genome, and it is highly differentiated from other present-day human sequences, though we can’t discard the possibility that the variant was introduced from another archaic group whose genomes we haven’t sampled yet,” Dr. Racimo said.

The scientists found that the variant is present at low-to-intermediate frequencies throughout Eurasia, and at especially high frequencies in the Inuits and Native American populations, but almost absent in Africa.

Sub-Saharan Africans have their own archaic admixture, but they have very little to no ice-age hominin–which is probably good for them, except for those who’ve moved further north.

Imagine my surprised upon searching and discovering very little research on whether chilblains disproportionately affects people of different races or ethnicities. If you were a dermatologist–or a genetically prone person–wouldn’t you want to know?

So here’s what I did find:

The National Athletic Trainers Association Position Statement on Cold Injuries notes:

Black individuals have been shown to be 2 to 4 times more likely than individuals from other racial groups to sustain cold injuries. These differences may be due to cold weather experience, but are likely due to anthropometric and body composition differences, including less-pronounced CIVD, increased sympathetic response to cold exposure, and thinner, longer digits.3,6

I think CIVD=Cold-Induced Vasodilation

The Military Surgeon: Journal of the Association of Military Surgeons of the United States, Volumes 36-37, states:

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The text continues with descriptions of amputating rotting feet.

A PDF from the UK, titled “Cold Injury,” notes:

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Notice that the incidence of chilblains is actually less in extremely cold places than moderately cold places–attributed here to people in these places being well-equipped for the cold.

c2ilp4evqaet4lu

Finally I found a PDF of a study performed, I believe, by the US Military, Epidemiology of US Army Cold Weather Injuries, 1980-1999:

picture-2

While I would really prefer to have more ethnic groups included in the study, two will have to suffice. It looks like trench foot may be an equal-opportunity offender, but chilblains, frostbite, and other cold-related injuries attack black men (at least in the army) at about 4x the rate of white men, and black women 2x as often as white women (but women in the army may not endure the same conditions as men in the army.)

On a related note, while researching this post, I came across this historic reference to infectious scurvy and diabetes, in the Journal of Tropical Medicine and Hygiene, Volumes 4-5 (published in 1902):

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Note: this is why it is important to discard bad theories after they’ve been disproven. Otherwise, you kill your scurvy victims by quarantining them instead of giving them oranges.

Race: The social construction of biological reality, pt 3

Oh man! We are finally at part three! The part in which I attempt incorporating two-D space into our diagram:

race3

Right, so as we turn our car around and head back up the road, we notice an intriguing turnoff in the Congolese rainforest: a tribe of the shortest people in the world, the Pygmies. According to Wikipedia:

A pygmy is a member of an ethnic group whose average height is unusually short; anthropologists define pygmy as a member of any group where adult men are on average less than 150 cm (4 feet 11 inches) tall.[1] A member of a slightly taller group is termed “pygmoid“.[2]

The term is most associated with peoples of Central Africa, such as the Aka, Efé and Mbuti.[3] If the term pygmy is defined as a group’s men having an average height below 1.55 meters (5 feet 1 inch), then there are also pygmies in Australia, Thailand, Malaysia, the Andaman Islands,[4] Indonesia, the Philippines, Papua New Guinea, Bolivia, and Brazil,[5] including some Negritos of Southeast Asia.

Women of the Batwa Pygmies
Women of the Batwa Pygmies

Basically, whenever humans live in tropical rainforests, there’s a good chance they’ll get shorter. (Rainforests also produce pygmy elephants.) Maybe it’s because short people can move more easily through the dense forest, or an adaptation to low levels of iodine, sunlight, or other nutrients–I don’t really know.

Wikipedia estimates that there are between 250,000 and 600,000 pygmies living in the Congo rainforest:

Genetically, the pygmies are extremely divergent from all other human populations, suggesting they have an ancient indigenous lineage. Their uniparental markers represent the most ancient divergent ones right after those typically found in Khoisan peoples. African pygmy populations possess high levels of genetic diversity,[10] recent advances in genetics shed some light on the origins of the various pygmy groups. …

“We studied the branching history of Pygmy hunter–gatherers and agricultural populations from Africa and estimated separation times and gene flow between these populations. The model identified included the early divergence of the ancestors of Pygmy hunter–gatherers and farming populations ~60,000 years ago, followed by a split of the Pygmies’ ancestors into the Western and Eastern Pygmy groups ~20,000 years ago.”

But I recall–was it WestHunt?–objecting that the authors of this paper used a too-fast estimation of genetic mutation rates. Oh here it is:

There are a couple of recent papers on introgression from some quite divergent archaic population into Pygmies ( this also looks to be the case with Bushmen). Among other things, one of those papers discussed the time of the split between African farmers (Bantu) and Pygmies, as determined from whole-genome analysis and the mutation rate. They preferred to use the once-fashionable rate of 2.5 x 10-8 per-site per-generation (based on nothing), instead of the new pedigree-based estimate of about 1.2 x 10-8 (based on sequencing parents and child: new stuff in the kid is mutation). The old fast rate indicates that the split between Neanderthals and modern humans is much more recent than the age of early Neanderthal-looking skeletons, while the new slow rate fits the fossil record – so what’s to like about the fast rate? Thing is, using the slow rate, the split time between Pygmies and Bantu is ~300k years ago – long before any archaeological sign of behavioral modernity (however you define it) and well before the first known fossils of AMH (although that shouldn’t bother anyone, considering the raggedness of the fossil record).

See my review of Isaac Bacirongo and Nest's Still a Pygmy
See my review of Isaac Bacirongo and Michael Nest’s Still a Pygmy

Let’s split the difference and say that one way or another, Pygmies split off from their hunter-gatherer neighbors and became isolated in the rainforest quite a while ago.

Before we drive on, I’d like to pause and note that I’m not entirely comfortable with using the way Pygmies are sometimes used in racial discussions. Yes, they are short, but they otherwise look a lot like everyone else in the area. Pygmies go to school, often speak multiple languages, live in cities, work at real jobs, read books, operate businesses, drive cars, fall in love, get married, build houses, etc. For more on Pygmies see my review of Isaac Bacirongo’s memoir Still a Pygmy (Isaac is a Pygmy man who speaks, IIRC, 5 languagues, attended highschool, and owned/ran successful pharmacies in two different cities in the DRC before the army burned them down during a civil war.)

Now I admit that Isaac is just one guy and I don’t know what the rest of the Pygmies are like.

People over-thought ancestry long before 23 and Me
Different classes of Mexican mestizos: people over-thought ancestry long before 23 and Me

But let’s hop back in our car, for at the other end of this road we have not a small town of isolated forest-dwellers, but a large group we have so far neglected: the Native Americans.

The indigenous peoples of North and South America today number about 60 million people, plus some quantity of mixed-race people (mestizos.) In some areas these mestizos are majority European by ancestry; in others they are majority Indian; studies in Mexico, for example, estimate that 80-93% of the population is Mestizo, with Indian ancestry averaging between 31% and 66% in different regions. The people of El Salvador are about 86% mestizo; Chileans are about 40% Indian and 60% Europeans; Columbia is about 49% mestizo; etc.

Unfortunately, Wikipedia doesn’t list the total number of mestizos, and I don’t have time to calculate it, but I will note that the total population of both continents, including Canada and the USA, is about 1 billion people.

map of gene-flow in and out of Beringia, from 25,000 years ago to present
map of gene-flow in and out of Beringia, from 25,000 years ago to present

We’re not sure exactly when (or how) the Indians got here, but it looks like they arrived around 10-20,000 years ago across the then-Bering Landbridge. (I think we should also keep in mind the possibility that they could have built boats.) According to Wikipedia:

Scientific evidence links indigenous Americans to Asian peoples, specifically Siberian populations, such as the Ket, Selkup, Chukchi and Koryak peoples. Indigenous peoples of the Americas have been linked to North Asian populations by the distribution of blood types, and in genetic composition as reflected by molecular data, such as DNA.[192] There is general agreement among anthropologists that the source populations for the migration into the Americas originated from an area somewhere east of the Yenisei River. The common occurrence of the mtDNA Haplogroups A, B, C, and D among eastern Asian and Native American populations has long been recognized.[193] As a whole, the greatest frequency of the four Native American associated haplogroups occurs in the AltaiBaikal region of southern Siberia.[194] Some subclades of C and D closer to the Native American subclades occur among Mongolian, Amur, Japanese, Korean, and Ainu populations.[193][195]

Genetic studies of mitochondrial DNA (mtDNA) of Amerindians and some Siberian and Central Asian peoples also revealed that the gene pool of the Turkic-speaking peoples of Siberia such as Altaians, Khakas, Shors and Soyots, living between the Altai and Lake Baikal along the Sayan mountains, are genetically close to Amerindians.[citation needed] This view is shared by other researchers who argue that “the ancestors of the American Indians were the first to separate from the great Asian population in the Middle Paleolithic.”[196][197] 2012 research found evidence for a recent common ancestry between Native Americans and indigenous Altaians based on mitochondrial DNA and Y-Chromosome analysis.[198] The paternal lineages of Altaians mostly belong to the subclades of haplogroup P-M45 (xR1a 38-93%;[199][200][201] xQ1a 4-32%[199][200]).

Hilaria Supa, Indigenous Peruvian Congresswoman https://en.wikipedia.org/wiki/Hilaria_Supa
Hilaria Supa, Indigenous Peruvian Congresswoman

These ancient Siberians also had some “European” DNA, as do modern Siberians, but they are most closely related to their neighbors to the south, throughout the rest of Asia. Native American DNA is super fascinating, but we don’t have time to get into it all. On the grand scale, Native Americans are genetically Asians, separated from the rest of the clade by (probably) a mere 13-20,000 years. (Somewhat coincidentally, the Dire wolf, Smilodon, giant beaver, ground sloth, giant Columbian mammoth (Mammuthus columbi), woolly mammoth, mastodons, giant short-faced bear, American cheetah, scimitar cats (Homotherium), American camels, American horses, and American lions all went extinct in North America around 12,000 years ago.)

On the grand scale of human history, (200,000 years, more or less,) 13-20,000 years is not very long, and the Native Americans have not diverged too much, physically, from their cousins in Asia. The G-allele mutation of the EDAR gene arose about 30,000 years ago somewhere in east Asia and gives both modern Asians and Native Americans (but not Europeans and Africans) their characteristic hair and skin tone. While Native Americans are clearly physically, culturally, and geographically distinct from other Asians, (just as Europeans and south-Asian Indians are distinct from each other,) they are genetically close enough that they unquestionably clade together in the greater racial schema.

Also credit Robert Lindsay
Also credit Robert Lindsay

As I’ve said before, my diagram is just one way to represent one aspect of the genetic (and physical) distances between people.

Here is another diagram, not mine, which tells the same story in a different way (though it estimates a much lower genetic distance between Bushmen and Bantus than I’d expect. Oh well. different studies get different results; that’s why replication and meta-analysis are super important):

The Melanesians of Papua New Guinea and Australia are in pink (there are some mixed Melanesian / Polynesian populations in the world, but our road trip skipped them.) Their nearest relatives are other south Asians and Polynesians, but those same south Asians are themselves more closely related to Europeans than Australians. Diagrammed like this, it’d be understandable to break off south Asians into one race and put Caucasians, Native Americans, and East Asians into a single race. And I suppose you could, if you wanted to and could get everyone else to start using your categories. Race is biologically real and quite obvious at the macro scale, but a few small groups like Aborigines and Bushmen introduce existential uncertainty that intellectuals can quibble over.I don’t think it would be terribly useful rearrangement, though, for all of the reasons discussed over the past three posts in this series.

Well, that’s the end of our big road trip! I hope you’ve enjoyed it, and that it’s cleared up that nagging question people seem to have: How can Nigerians be more closely related to Europeans than some other Africans? Have a great day, and enjoy the drive home.

Race: The Social Construction of Biological Reality

Note: This post contains a lot of oversimplification for the sake of explaining a few things. (Yes, I am still meditating on the greater Asian clade.)

Imagine you’re driving down a long highway that stretches from Nigeria to Beijing, passing through Berlin and New Delhi. In reality this route takes some large twists and turns, but we’re drawing it as a straight line, for all maps must simplify to be useful.

As you drive along, you pass many houses along the way–sometimes just a few clustered next to the highway, sometimes small towns, sometimes megalopolises with billions of people.

race

Queen Anna Nzinga of Ndongo and Matatmba
Queen Anna Nzinga of Ndongo and Matatmba

Our drive begins in one such megalopolis, that of Sub-Saharan Africa (SSA.) Here we meet people like Queen Anna Nzinga, author Chinua Achebe, and–though they have traveled far abroad–African Americans like Oprah Winfrey and Martin Luther King.

Though thousands of different languages are spoken by the thousands of different groups throughout SSA, we may still note a certain physical similarity among them–dark skin perfectly adapted to the equator’s strong sun, dark eyes, and tightly curling hair. While there is a tremendous amount of variety here–probably the most of any megalopolis in the world–they are also, quite clearly, related. You don’t have to go measuring skulls to figure that out.

But as we drive north, the houses thin out. Suddenly we are in a zone with almost no people–an enormous desert: the Sahara.

We speed through this harsh, empty landscape on a starry night, spotting only a few camels in the distance. We’re lucky we have a full tank of gas and several more in the trunk–for all but the most intrepid of our pre-automobile ancestors, this desert was nigh impassible, a vast barrier to human movement.

King Tutankhamun receives flowers from Ankhesenpaaten as a sign of love.
King Tut receives flowers from Ankhesenpaaten as a sign of love.

Finally we reach the vast inland sea of the Mediterranean, and the beginning of our second megalopolis. Most of the people here, from Berbers to Egyptians, have their own distinct look, more similar to their neighbors from the Middle East and Southern Europe than their neighbors to the south, across the inhospitable expanse of sand.

While there are many different countries and languages, no clear phenotypic line separates the people of Northern Africa, the Middle East, southern Europe, or northern Europe. Skin pales, hair lightens and becomes wavy, eyes turn a variety of hues as one nationality melts into the next. North-central Europe is the only place in the world where blue/green/hazel eyes and blond hair are common in adults; even in Wales, dark hair is dominant.

US Defense Secretary William S. Cohen with Prime Minister Nawaz Sharif (1998)
US Defense Secretary William S. Cohen (Jewish surname) with Pakistan’s Prime Minister Nawaz Sharif (Punjabi,) 1998

We hang a right through Turkey, Iran, Pakistan, and India, teeming with people.  Here again, though the people change and there are barriers like the Thar Desert, we find no harsh, nigh-impenetarable breaks like the Sahara.

Then, suddenly, we run smack into a wall, a natural wall of majestic proportions: the Himalayas. Beyond lie the Tibetan Plateau, Gobi Desert, and the vast emptiness of the Asian steppe. If this land was ever densely populated, generations of marauding steppe warriors have wiped them out. We see a few people here–aptly named Tibetan lamas, flocks of sheep grazing beside a scattering of yurts. Mongolia holds the distinction of being the world’s least densely populated independent country. (Ice-covered Greenland is even less dense, but owned by Denmark.)

Finally we pass beyond the shadow of the Great Khan’s memorial and into the valley of the Yellow River, where we find our third megalopolis: east Asia.

There is notably less genetic diversity here than in the first megalopolis–indeed, 93% of Han Chinese share a particular variety of the EDAR allele:

A derived G-allele point mutation (SNP) with pleiotropic effects in EDAR, 370A or rs3827760, found in most modern East Asians and Native Americans but not common in African or European populations, is thought to be one of the key genes responsible for a number of differences between these populations, including the thicker hair, more numerous sweat glands, smaller breasts, and dentition characteristic of East Asians.[7] … The 370A mutation arose in humans approximately 30,000 years ago, and now is found in 93% of Han Chinese and in the majority of people in nearby Asian populations.

The late, great, Satoru Iwata, accompanied by a caricature of a hard-working Caucasian toilet engineer
The late, great, Satoru Iwata, accompanied by a caricature of a hard-working Caucasian toilet engineer

Here, too, skin tones vary from north to south, though not as greatly as they do closer to the Greenwich Meridian. Most people have dark eyes, slim frames, and straight, smooth black hair.

Here in the megalopolis made famous by Beijing, Shanghai, Hong Kong, Seoul, and Tokyo, we have come to the end of the–first round–of our journey. From Africa to Asia, we have found three vast areas filled with people, and two major barriers which–though not completely impassible–have hindered humanity’s footsteps over the millennia.

People sometimes try to claim that human races do not exist simply because edge cases exist, small, scattered groups which possess a mixture of genes common to both Sub-Saharan Africans and Caucasians, Caucasians and Asians. And these groups do in fact exist, and are fascinating in their own rights. But these groups are also small, often living in extremely harsh, forbidding lands where few humans can survive (The inhabitants of the Himalayas and Tibetan plateau, I note, actually carry a gene that helps them survive at high altitudes which they received via an ancestor’s dalliance with a Denisovan hominin–the Denisovans were cousin to the Neanderthals and lived in Asia long before Homo Sapiens. No one else in the world carries this gene, so if you don’t have it, good luck living up there!)

But the vast, vast majority of the world’s people do not live in these harsh and unforgiving lands. They live clustered together in the enormous population centers, continually mixing, migrating, churning, and conquering each other, not people thousands of miles off. The concept of race stems from this basic observation of the geography of human settlements.

I totally stole this from Razib Khan, didn't I?
I totally stole this from Razib Khan, didn’t I?

Physical distance is genetic distance, but since my diagram is only two-dimensional, it can only show the genetic distance between two points at a time. The genetic distance between Asians and Caucasians is about 40k years–much shorter than the distance between Sub-Saharan Africans and Caucasians, 70k years. But the distance between Sub-Saharan Africans and Asians is also about 70k years. Although Asians and Caucasians split apart from each other about 40,000 years ago, they are both descended from a single group of ancestors (a handful of Denisovans and Neanderthals excluded) who left sub-Saharan Africa about 70k years ago. We may best think of the relationship between these three groups not as a single highway, but as a triangle with two sides 70k long and one side of 40k. But to accurately add more groups to our journey, (as we shall do on Thursday), we would have to keep adding dimensions, and we are aiming here for simplicity, not n-dimensional hypercubes.

Wise Tim, Crime, and HBD: Part 2, the HBD-view expanded

Continuing with our discussion of Leuconoe’s question:

What is your opinion of the “racial invariance hypothesis” which says that poor whites have about the same crime rate as poor blacks and that if you control for socioeconomic status all the differences between the races in crime go away?

This thesis is mainly backed by these studies: Poverty, not race, tied to high crime rates in urban communities, Homicide in Black and White (pdf.)

Since poor whites have a generally higher IQ as equally poor blacks this would also contradict the idea that lower IQ leads to more crime. …

Also this piece by a radical leftist: Nazis Can’t Do Math: Reflections on Racism, Crime and the Illiteracy of Right-Wing Statistical Analysis.

First, let’s be clear about what HBD says (and doesn’t say) about crime, race, and poverty (and while we’re at it, IQ):

  1. Genes influence traits like IQ and criminality.

As JayMan is fond of saying, “All human behavioral traits are heritable.” Okay, but what does this mean? Are we slaves to our genetics? Is there a a murder gene that guarantees that you will go out and stab someone to death? Since JayMan has already written a great explanation, I will quote him and urge you to read the rest:

The First Law emerges from studies of twins, studies of adoptees, and (now) sibling genetic similarity studies. In short, when you look at people’s behavior, virtually without exception … you find some effect of the genes on these traits….

How could this be, you may ask? How could such complex and highly specific things be encoded in the DNA and express themselves despite decades of upbringing and childhood experiences? For one, heritability is only probabilistic, not absolute. Few traits are 100% heritable. …

But, it’s important to understand the meaning of the term heritability. Heritability is the degree of variation in a studied population that can be attributed to genetic variation in that population. The cause is the variance in question is always due to some genetic difference, but it doesn’t tell you how direct such genetic influence is. …

So, how iron-clad is the First Law? Clearly, not all traits are heritable, right? Right. However, there are only a distinct set of exceptions. Traits that are dependent on content aren’t heritable at all. These include what language you speak, in which particular church you worship, what specific political party you identify. However, the degree and manner to which one interacts with these things are very heritable: how proficient you are with language, how church-going you are, how liberal or conservative.

Stolen from JayMan's post, "All Human Behavioral Traits are Heritable."
Stolen from JayMan’s post, “All Human Behavioral Traits are Heritable.” RTWT.

Note that these are not 100% heritable. There is no “guaranteed to stab people” gene, but there are genes that will make you more likely to want to stab people. Environment, “free will,” and random chance also influence how personality traits manifest in individuals.

Edit: It occurs to me that I should actually talk about some of these genes.

An MAOA variant, nicknamed “the warrior gene,” is the most famous of these. Wikipedia states:

A version of the monoamine oxidase-A gene has been popularly referred to as the warrior gene.[30] Several different versions of the gene are found in different individuals, although a functional gene is present in most humans (with the exception of a few individuals with Brunner syndrome).[31] In the variant, the allele associated with behavioural traits is shorter (30 bases) and may produce less MAO-A enzyme.[32] This gene variation is in a regulatory promoter region about 1000 bases from the start of the region that encodes the MAO-A enzyme.

Studies have found differences in the frequency distribution of variants of the MAOA gene between ethnic groups:[32][33] of the participants, 59% of Black men, 54% of Chinese men, 56% of Maori men, and 34% of Caucasian men carried the 3R allele, while 5.5% of Black men, 0.1% of Caucasian men, and 0.00067% of Asian men carried the 2R allele.[23][32][33][34][35][36][37][38][39][40]

In individuals with the low activity MAOA gene, when faced with social exclusion or ostracism showed higher levels of aggression than individuals with the high activity MAOA gene.[41]

Doubtless there are other genes I’m not aware of.

2.  The frequency of different genes varies between genetically-related groups.

The obvious genes here are ones that code for environmental responses, like lactase persistence in groups that have historically practiced dairy farming and dark skin in areas with intense sunlight.

Everyone on earth shares more genes with the people closely related to them than people less-closely related. For example, the Amish are more genetically similar to other Amish than non-Amish. Pygmies are more closely related to other pygmies than non-pygmies. This is why people look like their parents.

There are a lot of people who claim that “race is a social construct.” From a genetic standpoint, this is simply untrue (look at the top of the blog for an example of how geneticists can distinguish between different genetic groups.)

3. The HBD-theory is that the genes for personality/behavioral traits also vary by genetically-related groups, due to historical environmental (including cultural!) pressures.

For example, Polynesians may have been selected for navigational ability, because good navigators populated Polynesia and bad navigators died at sea. Chinese culture may have selected for people willing to work hard and get along even when they don’t really feel like it; and the Inuit may have been selected for the ability to stand really long, dark winters.

Relevant to our discussion, crime rates vary a lot by region:

World-Murder-Rate-Geocurrents-Map-1024x726

and society:

Graph from the Wikipedia
See also my post, “No, Hunter Gatherers were not Peaceful Paragons of Gender Egalitarianism.”

We’ve discussed warfare in pre-state societies over quite a few posts lately, so I’m going to summarize quickly: anthropological, historical, and archaeological records all document extremely high rates of violence in non-state societies. Anthropologist Napoleon Chagnon actually kept track of both homicides and births among the Yanomamo, and found that Yanomamo men who had killed more people had more children than Yanomamo men who had killed fewer people, providing a direct mechanism for genetic selection for traits related to homicide and other violence.

Many HBD bloggers, such as Peter Frost and HBD Chick, have discussed the ways in which states have discouraged crime, including (especially) executing criminals and thus preventing them from having children. The observed result:

homicide_in_europe_1200_2000

 

That all said, there are things that no serious HBD-er claims:

A. That all people or sub-groups within a “race” are identical. As Peter Frost wrote, “No, blacks aren’t all alike. Who said they are?” There are smart black people and dumb black people. Hard-working whites and lazy whites. Extroverted Asians and Introverted Asians. Some white groups (like Russians, apparently,) have significantly higher crime rates than other white groups. Even within the US, there are differences between different groups of whites, with significant ethnic divisions between classes and regions.

B. That environmental effects don’t exist or that humans do not respond to incentives. Obviously if it is cold outside I will wear a coat; if a law is passed that jay walkers will be executed, I will immediately stop jaywalking.

C. Observed differences are set in stone. The world is always changing. Where selection pressures change, so do populations.

 

So to get back to Leuconoe’s first query, I would not be surprised if controlling for socioeconomic status made all (or most) racial differences in criminality disappear. In fact, this is basically what I would expect, because poverty, criminality, and low-IQ are correlated, so controlling for one will tend to control for all of them.

But why on earth would you do this? If we control for bad decisions, most differences in intelligence disappear. If you control for enough differences, differences disappear. But as JayMan says, you can’t just control for a groups entire history; likewise, you can’t just control for all their traits.

Moreover, this still doesn’t get at why different groups have different rates of criminality or poverty in the first place, nor whether A causes B, B causes A, or C causes A and B. And even if you could prove that poverty causes crime, you still haven’t answered why there’s so much more poverty in black communities than in white (or Asian) ones.

What do we know about race and crime in America?

I have written a few posts on the subject, like When Crime is a Euphemism for Lynching; Bullying Pt 2: Race, Crime, and the Police; South Africa, Democracy, and the Dangers of Demographics (okay that one is on South Africa, not America); Rupert Murdoch is a Lying Liar; Sorry, Les Mis: Criminals Gonna Criminal.

Given that I’ve written nearly 500 posts, this is clearly not my main focus. I therefore recommend everything by La Griffe du Lion, including Crime in the Hood; Crime and the Hispanic Effect; Politics, Imprisonment, and Race; Aggressiveness, Criminality, and Sex Drive by Race, Gendder, and Ethnicity; The Color of Death Row; and Analysis of Hate Crime. And if that is not enough for you, here is the entire updated Color of Crime, from whoever publishes it. Here are a few of its major findings:

  • The evidence suggests that if there is police racial bias in arrests it is negligible. Victim and witness surveys show that police arrest violent criminals in close proportion to the rates at which criminals of different races commit violent crimes.
  • There are dramatic race differences in crime rates. Asians have the lowest rates, followed by whites, and then Hispanics. Blacks have notably high crime rates. This pattern holds true for virtually all crime categories and for virtually all age groups.
  • In 2013, of the approximately 660,000 crimes of interracial violence that involved blacks and whites, blacks were the perpetrators 85 percent of the time. This meant a black person was 27 times more likely to attack a white person than vice versa. A Hispanic was eight times more likely to attack a white person than vice versa.
  • If New York City were all white, the murder rate would drop by 91 percent, the robbery rate by 81 percent, and the shootings rate by 97 percent.
  • Both violent and non-violent crime has been declining in the United States since a high in 1993. 2015 saw a disturbing rise in murder in major American cities that some observers associated with “depolicing” in response to intense media and public scrutiny of police activity.
source: https://www.newyorkfed.org/medialibrary/media/research/epr/99v05n3/9909levi.pdf
source: https://www.newyorkfed.org/medialibrary/media/research/epr/99v05n3/9909levi.pdf

So much for controlling for income. It looks like equally poor whites and blacks still have massively different homicide rates. (Of course, I should note that the US welfare system attempts to put a minimum floor below which people don’t fall. Without intervention, equally poor whites and blacks might be more similar.)

West Hunter noted about the effects of lotteries:

Lotteries can be useful natural experiments; we can use them to test the accuracy of standard sociological theories, in which rich people buy their kids extra smarts, bigger brains, better health, etc.

David Cesarini, who I met at that Chicago meeting, has looked at the effect of winning the lottery in Sweden. He found that the “effects of parental wealth on infant health, drug consumption, scholastic performance and cognitive and non-cognitive skills can be bounded to a tight interval around zero.”

As I once mentioned, there was an important land lottery in Georgia in 1832. The winners received an 160-acre farm. But by 1880, their descendants were no more literate, their occupational status no higher. The families in the top 2/3rds of income managed to hang on to some of their windfall, but lower-income families did not.

West Hunter does note that there is probably a level below which material deprivation really will harm (or kill) you, and that a random windfall in such a situation will do you good, but virtually no one in the modern West lives in famine or near-famine conditions.

Picture 3  Picture 3

Picture 5

(I suspect it is really easy to catch car thieves in Hawaii.)

CNyyQS7VEAIRGCY

source http://maamodt.asp.radford.edu/Serial%20Killer%20Information%20Center/Project%20Description.htm
source: Radford University Serial Killer Information Center

Occam’s razor suggests that something is going on here.

To be continued…