Some evidence that drug laws work: controlling for earlier levels of use, twins who live in states where marijuana is now legal use marijuana around 20% more than their co-twin living in a non-legal state.

Impacts of recreational cannabis legalization on cannabis use: a longitudinal discordant twin study
https://onlinelibrary.wiley.com/doi/10.1111/add.16016

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#cannabis #marijuana #drug #law #twins
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Confirming results from previous studies, "we found widespread greater variability in males compared with females in cortical surface area and global and subcortical volumes for discrete brain regions."

Sex Differences in Variability of Brain Structure Across the Lifespan
https://academic.oup.com/cercor/article/30/10/5420/5850061?login=false

Other recent studies finding greater male brain variability include:

Sex Differences in the Adult Human Brain: Evidence from 5216 UK Biobank Participants
https://academic.oup.com/cercor/article/28/8/2959/4996558?login=false

Greater male than female variability in regional brain structure across the lifespan
https://www.biorxiv.org/content/10.1101/2020.02.17.952010v1

Brain charts for the human lifespan (see See Fig. 1 (D).)
https://www.nature.com/articles/s41586-022-04554-y

Follow Paolo Shirasi for more
https://mobile.twitter.com/PaoloShirasi

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#SexDiffeerences #men #women #brain
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The IQ gap between the rich and poor "has remained roughly the same for 50 years despite gains in nutrition and the rise of welfarism." "At the current pace of closure, [it] would not be eliminated until the second half of the 22nd Century."

Long-run Trends in the U.S. SES-Achievement Gap
https://www.nber.org/papers/w26764#fromrss

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#intelligence #poor #rich #SES #USA #nutrition #welfare
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Source:

Are Republicans and Conservatives More Likely to Believe Conspiracy Theories?
https://link.springer.com/article/10.1007/s11109-022-09812-3

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#ConspiracyTheory #republicans #conservatives
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Just released: The 2022-2023 College Free Speech Rankings

https://www.thefire.org/just-released-the-2022-2023-college-free-speech-rankings/?utm_source=Twitter&utm_campaign=Newsdesk

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#FreeSpeech #college
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Massive status bias in peer review.

534 reviewers randomized to review the same paper revealing the low status, high status, or neither author. 65% reject low status, 23% reject high status.

Nobel and Novice: Author Prominence Affects Peer Review
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4190976

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#status #bias #PeerReview
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“Individuals with lower intelligence levels (typically measured as IQ) tend to be more likely to engage in criminal behavior," and there is "consistent evidence of a mostly linear" association between low IQ and criminality.

Intelligence and criminal behavior in a total birth cohort: An examination of functional form, dimensions of intelligence, and the nature of offending.
https://psycnet.apa.org/record/2015-31412-011

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#intelligence #crime
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Thread on negative effects of immigration in Sweden

https://mobile.twitter.com/Composite_Guy2/status/1569252000730079236
https://archive.ph/cLTvS

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#Sweden #immigration #crime
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Regardless of a person's political ideology, reasoning ability ("cognitive sophistication") is generally associated with pro-science beliefs.

Science beliefs, political ideology, and cognitive sophistication
https://pubmed.ncbi.nlm.nih.gov/35925740/

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#science #ideology #reasoning
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Simple models predict behavior at least as well as behavioral scientists

https://arxiv.org/pdf/2208.01167.pdf

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#behavior #prediction
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"Feminist-identified men were substantially more likely to report EDM (erectile dysfunction medication) use than non-feminist men, even after controlling for alcohol use before sex, erection difficulties, sexual arousal, sexual health, mental health, and physical health."

Men’s Feminist Identification and Reported Use of Prescription Erectile Dysfunction
https://www.tandfonline.com/doi/abs/10.1080/00224499.2022.2029810?journalCode=hjsr20

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#men #feminism #ErectileDysfunction #medication
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Sweden's paradise: 40-45% of men born in Sub-Saharan Africa have at least one conviction for the penal code by age 34.

For Swedes, it's 12%.

Unfortunately the article is paywalled
https://kontrast.dk/sektioner/artikel/artikel/ny-undersogelse-tallene-vil-ryste-den-svenske-indvandrerdebat

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#Sweden #immigration #crime
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Twitter thread:
https://mobile.twitter.com/MrGeorgeFrancis/status/1570821626132049920


Study:

National Intelligence and Economic Growth: A Bayesian Update
https://www.researchgate.net/publication/363583751_National_Intelligence_and_Economic_Growth_A_Bayesian_Update

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#intelligence #economy
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"Counterfactual simulations show that exposing low-income households to the same products and prices available to high-income households reduces nutritional inequality by only about 10%, while the remaining 90% is driven by differences in demand. These findings counter the argument that policies to increase the supply of healthy groceries could play an important role in reducing nutritional inequality."

Food Deserts and the Causes of Nutritional Inequality
https://academic.oup.com/qje/article-abstract/134/4/1793/5492274?redirectedFrom=fulltext&login=false

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#food #inequality
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