Historical IQ Tests You Can Actually Take

What you can do here

Every modern IQ test - the WAIS-IV, Stanford-Binet 5, RIAS, WISC-V - descends from a handful of foundational tests built between 1905 and 1942. We have rebuilt those tests as interactive, scored web experiences so you can sit them the way a 1918 Army recruit would have, get a result, and see how the field of psychometrics actually worked at the start.

For each test below, you get two things: an interactive version you can take in your browser (where one exists), and a link to the original source book on Internet Archive in case you want to read the test's history, scoring rationale, or normative data in full. We do not host the books ourselves - Internet Archive is the canonical home for them and we send you straight to the right item.

These tests are historical documents. They are not valid measures of modern cognitive ability - norms from a century ago do not match a population that has gained roughly 30 IQ points since (the Flynn Effect), and several items make assumptions about general knowledge that no longer hold. They are valuable as primary sources for the history of psychology, education policy, immigration law, and the development of standardized testing - and as a window into how people built and validated cognitive tests before there was a real theory of psychometrics to guide them.

We include only tests that are unambiguously public domain in the United States: works published before 1929 (where copyright has expired), and works produced by the US federal government (which never had copyright). Tests still under copyright - Raven's Progressive Matrices, the Wonderlic, the Cattell Culture Fair, current SAT forms, modern Mensa qualifying tests - are not included.

New: IQ Tests Timeline 1880-2024

View all 108 tests organized into five eras (Pioneer, Mass-Testing, Standardization, Modernization, Contemporary) with intro essays and direct links to each archive page.

How to read a 100-year-old IQ test

These documents are at their most useful when read in context. A few notes:

• Norms are obsolete. The mean score for each test was calibrated against the population at the time it was published. The Flynn Effect (a documented rise of roughly 3 IQ points per decade through the 20th century) means a person scoring at the original mean of 100 in 1916 would score around 70 against modern norms. Do not use these tests to estimate present-day IQ.
• Item content reflects its era. Several items in the Army Alpha and Stanford-Binet 1916 ask about cultural knowledge that has shifted - brand names of products no longer sold, references to occupations that no longer exist. This is historically informative but means the tests are not culture-fair when administered today.
• The eugenic framing is part of the record. Terman, Yerkes, and Goddard all interpreted their results within a eugenic worldview that has been thoroughly discredited. Modern readers should engage critically with the original authors' conclusions, not just their methods. Stephen Jay Gould's The Mismeasure of Man (1981) is the standard critical companion.
• The tests are administrable, but not by you. Most of these batteries require a trained examiner, structured timing, and physical materials (form boards, picture cards). The PDFs let you read the test and study its design, but reproducing the standardized administration would require considerable effort.

Try the Army Alpha as an interactive test

We have rebuilt the Army Alpha as a working web test. All 8 original subtests, scored against the original 1918 norm tables. It takes about 50 minutes to complete and gives you a percentile against the original WWI recruit population. Useful as a historical curiosity - not as a measure of your modern IQ.

Take the Interactive Army Alpha

Tests we deliberately do not include

Several tests that you might expect to see on a page like this are not here, by design. They remain under active copyright and we have no license to redistribute them:

If a test is missing from the archive and you have evidence it is in the public domain (a release statement, copyright expiration date, or US-government authorship), contact us and we will review and add it.