The post argues that the Flynn effect is largely a result of psychometric bias and sampling issues, rather than actual changes in population intelligence.
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Cremieux is the author of the website Cremieux Recueil, a Substack publication. The author discusses papers that ought to be discussed, attracting tens of thousands of subscribers.
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The post critiques existing studies on sex differences in intelligence and proposes a rigorous methodology to explore the topic, emphasizing variance over mean differences.
Effective scientific criticism requires correctness, meaningfulness, and relevance, while avoiding common pitfalls like pseudo-analysis and rote critiques.
The post examines how Wilks' theorem explains the high correlation of GDP with other composite variables, highlighting implications for measurement reliability in psychology and economics.
The post debunks Gallagher and Goodman's flawed study linking hepatitis B vaccination to autism, emphasizing the need for rigorous scientific standards to combat vaccine misinformation.
The post critiques a study claiming women are smarter than men, arguing that it misdefines intelligence and employs flawed methodologies.
The post critiques the prevalence of p-hacking and data dredging in research, using a flawed functional medicine study as a case study to illustrate the consequences of these practices.
Hosting countries in the Olympics win more medals mainly due to larger athlete delegations and the influence over judges, not because of wealth or athlete quality.
Pit bulls are identifiable dogs with a history rooted in aggression and dogfighting, contrary to claims made by their advocates that they cannot be visually distinguished.
Holocaust reparations in Israel show that women's financial independence can lower fertility rates, while men's financial gains tend to increase them, raising questions for fertility policy design.
6.4Gypsies and Jews
2025-11-27 • education stereotypes ethnic studies discrimination roma
The post discusses the negative perceptions of gypsies in Europe, exploring the reasons behind these views and the phenomenon of 'passing' where individuals of Roma heritage choose to identify as other ethnicities, particularly in...
The post discusses the concept of measurement invariance using strawberry production as a metaphor. It explains how total strawberry production in the U.S. and Europe appears to be increasing at similar rates, but the underlying r...
The post discusses the relationship between intelligence and social mobility, highlighting that individuals with higher intelligence from lower social classes tend to move up, while those with lower intelligence from higher classe...
The post explores the historical development of Christianity in Japan, focusing on the transformation of Japanese Christians into an elite group post-World War II. It discusses the arrival of Jesuit missionaries in 1549, the subse...
The post discusses the rise in peanut allergies, attributing it to misguided advice from the American Academy of Pediatrics (AAP) to avoid peanut exposure in children until age three. This recommendation, based on limited evidence...
6.4An Autism Challenge
2025-10-15 • research epidemiology autism diagnosis public health
The author challenges the notion that the rise in autism diagnoses is due to an actual increase in autism prevalence, arguing instead that it is primarily a result of 'diagnostic drift.' The text outlines two main factors influenc...
The post critiques the credibility of sommeliers and wine experts, using the Judgment of Paris wine competition as a pivotal example that challenged the belief in French wine superiority. It discusses various wine scandals, includ...
The post discusses the recent findings that a significant percentage of left-wing Americans support political violence, emphasizing the need for careful interpretation of survey data. It argues that responses may be influenced by ...
Many people are misdiagnosed with drug allergies, and systematic testing could help delabel them, improving health outcomes and reducing unnecessary medication avoidance.
Wearables may track health metrics but often fail to deliver significant improvements in actual health outcomes due to biases and diminishing user engagement.
El Salvador has seen significant safety improvements due to Bukele's gang crackdown, but challenges remain in crime management and economic growth.
A recent Consumer Reports analysis reveals that many protein powders, particularly plant-based ones, contain lead and other heavy metals, with 47% exceeding safety standards. The contamination often arises from soil, water, and pr...
The author shares their laser eye surgery experience and outlines various surgical options, emphasizing safety, effectiveness, and personalized patient choices.
4.32025 SAT Data Drop
2026-02-11 • education sat test scores act achievement gap
The 2025 SAT and ACT results highlight enduring achievement gaps by race and gender, with significant variability in Asian student scores and men's higher performance nationally.