source: @nonebusinesshey on X Breeder Selection Theory hypothesizes that anti-natalist selection pressures mean that the genes of those who reproduce become more pronounced in the future. Anti-natalism shreds the genes of those who are not genetically predetermined to reproduce, leaving those who are wired to breed dominating future generations. The fertility crash is analogous to... Read More

Listening to women isn’t working. Look, the world has big problems. Big, big problems. Deep fake porn is not at the top of the list for any objective observer. But if you ask women, they’re probably going to list deep fake porn as the number one problem, or at least in the top 5. No... Read More

[Note: The somewhat odd tone and form of this essay are due to its having been one of two speech ideas sent to VDARE.com editor Peter Brimelow for consideration for possible presentation at their April 2024 conference. Ultimately, the other speech (which I might submit for publication later) was chosen, though due to their regular... Read More

We have all seen graphs like this one. Over thousands of years, the human population inches upwards and then after the Industrial Revolution, it shoots up, with no end in sight. We imagine a nightmare world of people stuffed liked sardines into mass-produced, identical houses, eventually smothering in each other’s waste. Many people still think... Read More

Is this ‘The Great Replacement’ or something else? This video is available on Rumble, BitChute, and Odysee. A friend sent me a link to a mystifying website. It’s childfreebc.com, and the home page tells the story: “Positively Impacting the World Through Reproductive Health. ChildFree by Choice (CBC) connects Candidates seeking vasectomies and tubal ligations with... Read More

Things on Twitter escalated as I held my ground against an extreme army of old, unattractive women with low fertility. I love unattractive old women with low fertility, just as I love everyone, because I am a Christian – but I will not be bullied. I began the second wave of my TOTAL ASSAULT on... Read More

Post updated, 10/21/14. See below! It's general trope in the HBD community: people are getting dumber. The low IQ are outbreeding the high IQ, leading to a slow decline in genetic intellectual potential in the population. Indeed, my own analyses seem to have shown that there was a fair fertility advantage among the lower IQ... Read More

It's been nearly three years since the JayMan has been chugging away on the innerwebs about all this heritable biological impact on human behavior and society. I thought I would leave a quick snapshot of my most time-honored posts here at JayMan's blog. Now this is only for its life on Wordpress. For about the... Read More

Immigrants to Denmark come largely from the Muslim world, where fertility rates are converging to the European norm. In the future, most immigrants will come from sub-Saharan Africa, where the fertility decline has stalled and has actually reversed in some countries. (source) My last post dealt with Helmuth Nyborg’s study and the decision by the... Read More

Morten Østergaard, Danish Minister for Research, Innovation, and Higher Education. Morten, if you’re reading this post, please reply to my e-mail. I first learned about Danish psychologist Helmuth Nyborg while working on my doctoral thesis. In those pre-Internet days, I plodded my way through the academic literature largely by consulting the Science Citation Index and... Read More

Across the United States, there is a general pattern – at least among Whites – of urban dwellers tending to be more liberal and rural dwellers tending to be more conservative. Indeed, this pattern is so pronounced that Steve Sailer managed to produce a now well-known (at least in the HBD-sphere) hypothesis of White American... Read More

Roosh V, a pick-up artist, and one of the foremost voices in the "manosphere" – especially its reactionary wing, has been getting some attention lately. This past evening, ABC's 20/20 featured an exposé into the "manosphere", the world of men who make an effort to improve their romantic/sexual success with women and discuss their frustrations... Read More

Interior of a magasin général (source: photographiquement Frank). Wherever there was less competition from British or American merchants, it was easier for French Canadians to go into business. These same regions also have unusually high rates of neurological disorders, including Tay-Sachs. Coincidence? French Canadians have a unique demographic history. From a founding population of some... Read More

We've got ourselves a Y-chromosome here... And of course, these are only fitting. I'd go straight to the classic John Williams version, but Hans Zimmer's recent treatment kind of grew on me, so I'm using both. These themes and the scenes in which they originate show something of where I am at with my impending... Read More

Continuing my ongoing investigation into fertility, I wanted to take another look at who's having children. This post will look at fertility from a different angle: the spread in fertility by sex, IQ, political orientation, and education. I was prompted to this by a recent article describing parenthood in Norway. It found that a fifth... Read More

This is my 100th blog post. Upon reaching this milestone, I thought that this would be a great time to take moment to look back at my experience as a blogger in Human BioDiversity (HBD) and share my thoughts on the things to come. 1. The Beginning 2. Fertility 3. Immigration and the economy 4.... Read More

This post is meant to serve as a prod to certain of my smart liberal friends to start having children. It will come as no big surprise to my long time readers. The 2012 General Social Survey (GSS) results have been released. I decided to take a quick look to see if certain trends were... Read More

A Parsi woman in traditional costume, painted by Raja Ravi Varma (source) The Parsis are renowned for achievement in many areas of life—trade, education, philanthropy, and popular culture. Yet they number only about 100,000 in the entire world (Wikipedia, 2013). What qualities made them so successful? The most often-cited ones are their thrift, foresight, skillfulness,... Read More

Following up on my earlier post about the connection between fertility rates and happiness, I wanted to take a wider view with more proper research controls to see if the pattern holds. Here is a map I've drawn of self-reported happiness around the world, as reported in the World Values Survey: As before, this is... Read More

To demonstrate a point that I have asserted at various points – a point that tends to be often indirectly hinted at in the blogosphere and only occasionally stately concretely, I again avail to maps to tell a tale. First, I'll start with a previously featured map of fertility rates across Europe: This is a... Read More

Following up on my previous post, a commenter over at Ellen Walker's Complete Without Kids responded to my comment there with this: I wanted to see if this was in fact true. So I took a look at what the GSS could tell me. First, I used the CHLDIDEL variable, which reports the answer on... Read More

Over at Psychology Today, clinical psychologist Ellen Walker has a blog called Complete Without Kids, which is dedicated to the modern child-free (presumably professional) adult. There, she extols and rationalizes the conscious decision to not reproduce. Of course, it's not like Psychology Today isn't loaded with the typical cutting-edge suspect psychological wisdom, and it isn't... Read More

Now that the blogosphere has discovered my finding that conservatives are outbreeding liberals by a rather large margin, many have taken it as a reason to rejoice. The genes for "pathological altruism" (which are a feature of the special evolutionary path that Northwestern Europeans have undertaken, which seems to result in such traits), which gives... Read More

There has been a lot of discussion in the blogosphere as of late as to whether the "cads"—i.e., low paternal investment, promiscuous (and often low-IQ) men were siring more children than "dads"—high paternal investment, monogamous, high-IQ men. While I and others have produced some evidence (primarily from the GSS) that tenuously indicates that this is... Read More