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As I showed in a recent post, there are no "crime genes" or even evidence of a genetic predisposition to criminal behavior. The purported research findings are a house of cards. jayjoseph22.substack.com/p/genetic-st...

Genetic Studies of Criminal and Antisocial Behavior: The Verdict Is InExploring problematic genetic studies and theories of "criminal and antisocial behavior" in the social and political context.jayjoseph22.substack.com

The Dutch government once gave medals to people who perpetrated aggression and violence in its colonial wars in Indonesia. The powerful reward “aggression” when it serves their interests, and blame it on faulty genes when it doesn’t. jayjoseph22.substack.com/p/genetic-st...

"Genetic Studies of Criminal and Antisocial Behavior: The Verdict Is In." My new Substack post on problematic genetic studies and theories of "criminal and antisocial behavior" in the social and political context. jayjoseph22.substack.com/p/genetic-st...

Genetic Studies of Criminal and Antisocial Behavior: The Verdict Is InThe Gene Illusion is a reader-supported publication.jayjoseph22.substack.com

Theoretically, of all types of human behavior, vegetarianism is the least likely to be “genetic.” The slow-motion behavioral GWAS train wreck.

The researchers could have added: "We realize that these studies' comparisons of identical (MZ) vs. fraternal (DZ) twins depend on the assumption that both twin types grow up experiencing 'equal environments.' Because this assumption is untrue, our findings should be treated with extreme caution."

The claims about schizophrenia gene discoveries in this book are false. Nice Hollywood-type story that sells books and potential movie rights, but the claimed gene discoveries were actually non-discoveries (false positives). jayjoseph22.substack.com/p/hidden-val...

My 2022 negative review of R. Plomin's 2018 book "Blueprint: How DNA Makes US Who We Are" for the American Journal of Psychology is now available as a (non-paywalled) PDF. It contains a critique of key behavioral genetic methods and claims. jayjoseph.net/wp-content/u...

“What does it say about the undemocratic influence of outside pressure groups on our academic institutions when even scholarly discussion of mass suffering among children becomes professionally intolerable?”

I see that Google AI found my recently published description of the views of German "racial hygienist" H. W. Siemens. Siemens invented the "classical twin method" in 1924, which compares the behavioral resemblance of identical (MZ) vs. fraternal (DZ) twin pairs. journals.sagepub.com/doi/10.1177/...

In this book, Harden (p. 30) recognized that she did not become a registered criminal based on her LSD possession, due to "unfair privilege afforded by my race and education." This statement helps invalidate the entire "genetics of criminal behavior" project, but that is not what Harden concluded.

In her new book, K. P. Harden discusses whether criminals are "born that way." The answer is a definitive No, as I showed in a 2001 publication and in my 2004 book, "The Gene Illusion." The main points still stand. jayjoseph.net/wp-content/u...

The reality is that DNA has little if anything to do with causing "psychiatric disorders." Psychiatric genetics is a "null field" of science, producing confirmation-biased p-hacked research, going all the way back to its "Munich School" origins in 1930s Germany. www.madinamerica.com/2015/10/erns...

N. Cofnas wants to bring the IQ "hereditarian revolution" to Brussels, the "capital of Europe." The EU and NATO are headquartered in Brussels and are supporting the ethnic cleansing and genocide of non-white peoples. Seems like the "revolution" had already taken hold there.

In 1854, the California Supreme Court ruled that "Chinese people" are "a race...whom nature has marked as inferior, and who are incapable of progress or intellectual development beyond a certain point." Now, the average Chinese IQ is among the highest in the world. en.wikipedia.org/wiki/People_...

The “Schizophrenia is 80% Heritable” Fallacy: Deconstructing a Twin Study Meta-Analysis open.substack.com/pub/jayjosep...

The “Schizophrenia is 80% Heritable” Fallacy: Deconstructing a Twin Study Meta-AnalysisMy new (paywalled) article, published online on 3/11/2026open.substack.com

Time to reject the common claim that schizophrenia/psychosis is "80% heritable." My new (paywalled) article in the Review of General Psychology: "The 'schizophrenia is 80% heritable' fallacy: Deconstructing a twin study meta-analysis." doi.org/10.1177/1089...

The “Schizophrenia is 80% Heritable” Fallacy: Deconstructing a Twin Study Meta-Analysis - Jay Joseph, 2026The mainstream psychiatry literature contains the common and mostly unchallenged claim that schizophrenia is roughly 80% heritable. A 2003 twin study meta-analy...doi.org

For those still interested, "The Gene" by Siddhartha Mukherjee (2016) tells a false story about twin research and the genetics of psychiatric conditions. See my 2019 article. www.madinamerica.com/2019/12/twin...

Twin Studies and Ken Burns' Upcoming Documentary on “The Gene: An Intimate History”Although most of what he wrote about schizophrenia twin research was wrong, Siddhartha Mukherjee's book will be the subject of a three-hour PBS documentary.www.madinamerica.com

Regime following the eugenics of F. Galton and followers such as psychologist R. Cattell in his 1973 book "Beyondism." The APA tried to give Cattell a 1997 "Lifetime Achievement Award," despite his having called for "phasing out" allegedly "moribund cultures." www.insidehighered.com/news/2009/03...

Because they undoubtedly also believed that "anti-social behavior" and "sociopathy" are as "heritable" as IQ, did Epstein and his politician/billionaire/royal friends worry about passing their own genes down to the next generation? www.motherjones.com/politics/202...

Epstein couldn't stop emailing people about eugenicsIn the latest files, the trafficker gives it a Silicon Valley–pilled name: "genetic altruism."www.motherjones.com