Uriah Profile picture
16 Feb, 5 tweets, 2 min read
What caused the big Baby Boom of 46-63? The explanations most often given are economic, but the fundamental cause seems to be contraceptive failure: married couples didn't actually want families as large as they were having:
As the excerpt indicates, the problem was accentuated by a decline in the average age of marriage in those NW Euro countries west of the Hajnal line that had previously delayed it:
Histories of homosexuality often emphasize the war as a major turning point, when guys realized they weren't the only one and were exposed to prostitutes in major cities. Straight guys seemed to have a similar awakening, although they talked about it less.
My general impression is the war changed the way young men talked about sex and that it what they expected of their wives in bed. Much of the Boom debate could have been resolved if somebody had the gall to survey Americans year to year about how many times they were screwing.

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More from @crimkadid

1 Feb
Going to argue today that societies in which agriculture is performed collectively in and around nucleated villages act to domesticate human beings via the same biological pathway as in dogs and cats and is apparent in a similar shortening and broadening of their skulls
The second central point is that behavioral domestication is a result of an increased tolerance for stress and that people who were most thoroughly feudalized (most Slavs, Germans, French) have adapted by becoming harder, less fearful of people, and overall less eccentric.
The cephalic index measures the length of the skull divided by its width. Values of about 75 or less are considered dolicocephalic or long headed (like Ridley Scott’s Alien). More than 81 is brachycephalic or broad headed like a bulldog. Populations vary from means of 70-90.
Read 71 tweets
12 Jan
Everything I hear about Q reminds me of the 80's Satanic Panic ("There's secret tunnels under the preschool where kids are abused!", claims local schizophrenic). Under interrogation some 5 year olds claimed the Q adjacent Chuck Norris was a pedophile witch: Image
The 80's Panic is sort of interesting as an evolutionary transitional form: halfway between genuine medieval witch hunts and more modern, sophisticated theories about pedophiles.
There's something about deeply appealing about this idea that allows it to recur under different guises in different eras. An interesting question is how many of these panics originate with genuine schizophrenics like Judy Johnson en.wikipedia.org/wiki/McMartin_…
Read 7 tweets
14 Dec 20
Trump's 2016 primary campaign (not the general) had an ethnic angle that went largely untalked about. It revealed a cultural split in the American Midwest between the descendants of Germanic immigrants who hated his boastfulness and the descendants of Old Americans who loved it.
After the Iowa cacucus I fiddled around with a NCSS spreadsheet of Iowa counties and discovered that the % of county who identified as Dutch in the census was the best negative predictor of Trump’s vote count, more important even than the % of bachelor’s degrees.
There aren’t many Dutch people in America. Their highest concentration by far (57.7%) is in ultra-religious Sioux County Iowa which also gave Trump his lowest shared of the vote (10.9%, his average was 24.3%). Others have noticed the same thing: aei.org/op-eds/the-mos…
Read 17 tweets
9 Dec 20
The People of the British Isles Project developed a new technique to cluster genetically similar peoples, looking at the British with a racial microscope. What they discovered is that the English are some of the most homogenous/genetically boring people in Europe. Image
The project discovered 53 genetic clusters, five of them just in the Orkneys, and yet the great majority of Englishmen belong to the same big genetic blob. I don’t think there’s another European country of 50+ million people that shows such uniformity.
In the last millennium there have been major population movements from S England to the periphery that has eliminated some of the country’s genetic isolates. One of the best examples are the formerly Scandinavian people of the Wirral peninsula in NW England.
Read 6 tweets
6 Dec 20
Since the 1960’s British clinicians have noticed that black migrants to the country, whether from the Caribbean or Africa itself, have a much higher rate of schizophrenia than the general population. It turns out that Indian and Pakistani immigrants also have higher rates.
Now part of the story is why these groups are so particularly affected, but the general lesson is that immigration increases everyone’s risk of going crazy; in fact it’s the largest environmental risk of factor. If the wrong person does it, changing countries can be disastrous.
The relationship between schiz and migration was first noticed in Norwegian immigrants to Minnesota (my people) by Odegaard in 1932. He found that most of his schizos had been considered eccentric even back in Norway and concluded that selective migration was the explanation.
Read 11 tweets
28 Nov 20
In September 23andMe produced a study showing that subjects belonging to blood group O (the most common type in Europe) have a slightly reduced chance of developing covid: blog.23andme.com/23andme-resear…
This is not the first time a blood group has been found to affect infectious disease risk. Maybe the most well-known example is that O carriers have a doubled chance of developing cholera, against which AB is almost miraculously protective: academic.oup.com/aje/article-ab…
The historic epicenter of cholera is the Ganges River Delta in and around Bangladesh. As a result of selective pressure, people in the Delta have the world’s lowest frequency of blood group O (American Indians have the highest, in some cases 100%) ncbi.nlm.nih.gov/pmc/articles/P…
Read 10 tweets

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