Editorial policy

Sources

Research claims are sourced to peer-reviewed studies, found and checked through PubMed. Each reference on the site says what kind of study it is, what it found, its main limitation, and the date we checked it. So far, every study has been checked against its abstract only; we say so next to each reference and don't make claims that need the full paper. Other facts (such as definitions from a government agency) link to the official source.

Evidence and judgment

We separate three things: what a study found, what we infer from it (labeled as our inference), and practical suggestions (labeled as editorial judgment). The trait-by-trait suggestions on this site are editorial; they haven't been tested as interventions.

What we don't do

• No invented statistics, quotes, experts or reviews.
• No percentiles or norms we can't source. Scores are averages of your answers.
• No claim that anything here has been reviewed by a clinician or researcher — it hasn't.
• No diagnosis, and no advice for high-risk situations beyond pointing to professional and emergency help.

Updates and corrections

Pages show when they were published and when they were last substantively updated; guides keep a short update history. Fixing a typo doesn't count as an update. If you find an error, email info@difficultpersontest.com with the page and the problem. We correct factual errors and note the correction in the page's history.

Money

The site has no advertising, sponsors or affiliate links. If that changes, affected pages will say so clearly, and money will never decide what the test measures or how results are worded.