Emilkirkegaard.dk

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 …

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URL: https://emilkirkegaard.dk/en/2017/08/health-dysgenics-a-very-brief-review/

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 …

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The conservative advantage in mental health keeps replicating

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 …

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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 …

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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 …

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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 …

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Exercise for depression: the evidence does not support this …

WebFor the 35 trials (1356 participants) comparing exercise with no treatment or a control intervention, the pooled SMD for the primary outcome of depression at the end of …

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The Case for Conscientiousness: Evidence and Implications for …

WebORIGINAL ARTICLE The Case for Conscientiousness: Evidence and Implications for a Personality Trait Marker of Health and Longevity Tim Bogg, Ph.D. & Brent W. Roberts, …

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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 …

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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, …

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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 …

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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 …

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The within-person design: a selective review

WebThe within-person (or intra-individual or within‐individual or …), design is a longitudinal design where we follow people over time as they change on some purported cause, and …

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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 …

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Data sharing and Add Health – Clear Language, Clear Mind

WebI am doing an S factor study of US counties in the usual way. For that reason, I need some kind of county-level cognitive ability estimate. I know that this is possible to create using …

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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 …

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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 …

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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 …

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Does Homework Improve Academic Achievement

WebDoes Homework Improve Academic Achievement? A Synthesis of Research, synthesis.

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