Results
What the data from this site's tests show. Everything here is from first attempts only, and updates as more people take the tests.
Correlations
How every test relates to every other, with a scatter plot for each pair.
Group differences
How men and women, and orientation and gender identity groups, score on each test.
National IQs
Average scores by country on the nonverbal tests, and vocabulary by language.
Item statistics
For any cognitive test, how each item behaves: how many answer it correctly, and how well it measures.
Reliability
How consistently each test measures: internal consistency, retests, and short against full forms.
Site demographics
Who takes the tests: countries, per head of population, age, sex, languages.
Site traffic
How many tests have been completed, by how many people, and when.