About
Normal or Not is a free platform of human-measurement tests that run entirely in your browser. You play short tests for reaction time, memory, and perception, and the site tells you where you stand: normal, or not.
There is no account and no sign-up. Every calculation happens on your own device. We do not collect your test data, and nothing you measure is sent to our servers. The only thing our servers do is deliver static files.
The site is published in four languages: English, Turkish, Spanish, and Portuguese. Each language is written for its own readers, not machine-translated from English.
The percentile norms behind each test are drawn from published, peer-reviewed research. As tests are added, the sources are listed on the Science Note page.
One important point: these tests are a screening tool, not a clinical diagnosis. For anything health-related, please read the Medical Disclaimer.