Emilkirkegaard.dk
The conservative advantage in mental health keeps …
WEBThe conservative advantage in mental health keeps replicating. Emil O. W. Kirkegaard. 29. January 2022. Political science / Psychiatry. Back in May 2020, I published a paper provocatively titled Mental Illness and the Left. It was based on the common observation (stereotype!) that conservatives seem less prone to mental illness.
Actived: 9 days ago
URL: https://emilkirkegaard.dk/en/2022/01/the-conservative-advantage-in-mental-health-keeps-replicating/
Recent evidence on dysgenic trends (February 2021)
WEBThe persistence of common, heritable psychiatric disorders that reduce reproductive fitness is an evolutionary paradox. Here, we investigate the selection pressures on sequence variants that predispose to schizophrenia, autism, bipolar disorder, major depression and attention deficit hyperactivity disorder (ADHD) using genomic data from 150,656 …
Health dysgenics: a very brief review
WEBWoodley reminded me of the dysgenics for health outcomes by linking me to a study about the increasing rates of cancer. I had first reached this conclusion back in 2005 when I realized what it means for evolution that we essentially keep almost everyone alive despite their genetic defects. The problem is quite simple: mutations accumulate and
The genetics of mental illness – Clear Language, Clear Mind
WEBThe genetics of mental illness. Emil O. W. Kirkegaard. 12. May 2022. Genomics / intelligence / IQ / cognitive ability / Psychiatry. In popular discourse and the media, the debate is between those who recognize significant genetic causation in mental illnesses versus the status quo blank slate people who leave all such talk out and talk only
Mental illness and intelligence: the relationship is negative
WEBThe structure of psychopathology Three models were tested using confirmatory factor analysis: a correlated-factors model (Model A), a hierarchical or bifactor model (Model B), and a 1-factor model (Model C) Model B′ shows the final revised hierarchical model Colored ovals represent latent (unobserved) continuous symptom trait factors colored boxes …
Medical geneticists on PGD for non-medical purposes
WEBQuoted from Textbook of Human Reproductive Genetics, chapter 13: PGD within the“autonomy model” According to what may be called the “autonomy model,” prospective parents are free to use PGD in order to select embryos on the basis of any characteristic they prefer, whether health related or not.
New study out: Mental Illness and the Left
WEBWithin-study meta-analysis of all the results found that extreme liberals had a 150% increased rate of mental illness compared to moderates. The finding of increased mental illness among left-wingers is congruent with numerous findings based on related constructs, such as positive relationships between conservatism, religiousness and health in
A theory of Ashkenazi genius: intelligence and mental illness
WEBEmil O. W. Kirkegaard. 11. November 2022. Genetics / behavioral genetics / intelligence / IQ / cognitive ability / Psychiatry. I want to put together a theory to explain a putative phenomenon: Ashkenazi Jews have more geniuses relative to non-Jewish Europeans (gentiles) than one would expect based on their average intelligence of about 110 IQ.
Social media, mental health, and political polarization
WEBAmerican Economic Review, 110 (3), 629-676. The rise of social media has provoked both optimism about potential societal benefits and concern about harms such as addiction, depression, and political polarization. In a randomized experiment, we find that deactivating Facebook for the four weeks before the 2018 US midterm election (i) reduced
Is miscegenation bad for your kids
WEBResults. Mixed-race adolescents showed higher risk when compared with single-race adolescents on general health questions, school experience, smoking and drinking, and other risk variables. Conclusions. Adolescents who self-identify as more than 1 race are at higher health and behavior risks.
Crime measurement and the black-white crime gap
WEBA lot of instant experts have appeared on the black-white crime question. Many of these are somewhat unfamiliar with the quite large literature on the topic. The people who mostly study crime are criminologists and sociologists. However, as we know, these are some of the most left-skewed academics o
Secular changes in race differences in height: a mystery
WEBTrends show that height has not changed substantially at a time when physical health, as indicated by the incidence of obesity, Type II diabetes, and cholesterol, has deteriorated, and earnings disparities across racial gaps persist. Results at mean values for males indicate that being 10 cm taller is associated with a 14–47% increase in
Unnatural hair color really is a danger zone marker (new study out)
WEBHere we test whether dying your hair an unnatural colour – something which conspicuously expresses non-conformity – is related to mental instability, using a large dataset of online daters (OKCupid dataset, about n=14k used in this study). We find the expected pattern, which was moderate in size (p = -033 to -0.23, depending on controls).
The within-person design: a selective review
WEBMethods Participants were from the British Household Panel Survey prospective cohort study with 18 annual measurements of residential location and self-reported health outcomes between 1991 and 2009 (n=137 884 person-observations of 17 001 persons in England). Neighbourhood deprivation was assessed concurrently with health outcomes …
Clinical vs. statistical prediction – Clear Language, Clear Mind
WEBTo compare the accuracy of clinical and mechanical (formal, statistical) data-combination techniques, we performed a meta-analysis on studies of human health and behavior. On average, mechanical-prediction techniques were about 10% more accurate than clinical predictions. Depending on the specific analysis, mechanical prediction substantially
Supersize me failed replication. Well sort of.
WEBMost people people my age know about a documentary called Supersize me! from 2004.. The story of it goes like this:. As the film begins, Spurlock is in physically above average shape according to his personal trainer. He is seen by three physicians (a cardiologist, a gastroenterologist, and a general practitioner), as well as a nutritionist and a personal …
The Mensa fallacy – Clear Language, Clear Mind
WEBThe Mensa fallacy. Emil O. W. Kirkegaard. 14. August 2022. intelligence / IQ / cognitive ability / Psychiatry. Back in 2015 at ISIR, a researcher gave a presentation about mental illness and intelligence, reporting it was elevated at high intelligence levels, along with all kinds of other issues. This was later published as a paper in 2018.
Race gaps in brain size in the very young
WEBMoreover, a within-group correlation does not establish that between-group differences have the same origin. Brain size differences between men and women are much greater than the race differences in brain size, yet men and women have the same average IQ. Brain size of full-term Black and White infants is the same at birth (Ho, Roessmann, …
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