Sitemap - 2026 - Just Emil Kirkegaard Things

The making of the 8 dimensional US political test

Semen quality and intelligence

Explore psychological correlations at taketest.xyz

Testing 15 languages at the same time

“Your presence in the UK is not considered to be conducive to the public good.” and “How much can we boost fertility rates?“ talk

Race differences in reaction time: data from NHANES 3

Migrant performance on PISA worldwide

Top universities and national intelligence

Is the EU's single market and Eurozone even good for economic growth?

Occupations, fertility, men, and politics

Want children? Marry a telemarketer or maid, avoid librarians and web developers

Tracking ancestry and social inequality using American surnames

Skin color and intelligence in Latin America

Race, intelligence, and inequality in Brazil

Race and social inequality in France

Genetic evidence of Ashkenazi intelligence

Explaining economic growth since 2000

Free speech for thee but not for me

Leftism, mental health, and visual presentation confirmed

Migration and feelings of safety in Denmark

The structure of Substack

What really predicts fertility? A principled look at country time series data

American Jewish gentile differences

Who is gaining Danish citizenship?

Assessment of the Confidence Calibration Test + new test

Explaining Poland's fertility paradox

Which countries are best at esports? 2026 update

Do gun ownership predict homicides taking race into account?

Meta-Analysis of American Race Differences in Intelligence

Consequences of racial composition changes in USA 1970-2023

Dysgenics for whom?

Motivated reasoning and intelligence

Words can't bring me down

New test site: taketest.xyz

Penalization for small n problems: case study of Steam games

Steam game ratings don't show recency effect

Newest results on the sex difference in intelligence

Who makes the most highly rated movies?

Recency bias in IMDB ratings

Climate science and conspiracy theories

Bryan Pesta tells his story + the closing of HDF

Who is best at the Olympics? Not America

Good vs. bad scientific questions

January book reviews (4-6): Francis Crick: Discoverer of the Genetic Code by Matt Ridley

January book reviews (4): Dead Aid: Why Aid Is Not Working and How There Is a Better Way for Africa

January book reviews (3): Matt Ridley's How Innovation Works: Serendipity, Energy and the Saving of Time (2020)

January book reviews: part 2 Acemoğlu & Robinson (Why Nations Fail)

Book reviews for January 2026

Are dogs good or bad for fertility?

EU health tech at its finest: case study of Oviva

Does assortative mating work?

New York Times is back on the race science beat

Assortative mating and differences

Who is biased? On motivation and science

Good science on national IQs

Mini-reviews of books I read in 2025

Understanding audit studies

Whose benefit of the doubt?

"Cultural Differences in Response to Pain" revisited

Review: Can we avoid another financial crisis? (Steve Keen)

Reviewing Karl Marx

Personal productivity in 2025 in numbers