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Questions, corrections, data requests, or a test item you think is wrong — here is how to reach us.

There is a person behind this site, and we read what comes in. Use the form below for anything: a reasoning item you think is flawed, a correction to one of our explainers, a privacy or data request, or plain feedback on the test.

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How to get a faster answer

We aim to reply within a few business days. We can’t offer clinical advice or interpret an individual result the way a professional would — that is not what we are, and our terms of use explain why. For background on the project, see about; and if you haven’t yet, the test itself takes about ten minutes.