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Give the work its credit.
Most quizzes here contain original TypologyQuiz questions. Four draw on named external instruments or projects. Attribution, permission to reuse, and scientific evidence are separate questions.
Original TypologyQuiz quizzes
Our original questions and interpretations are for reflection or entertainment. References to a psychological theory or cultural tradition do not mean the quiz has been validated.
Mini-IPIP · Big Five
The 20-item Mini-IPIP key comes from the International Personality Item Pool. IPIP items are public domain. Donnellan, Oswald, Baird, and Lucas developed the Mini-IPIP in 2006. We document our presentation and instruction adaptations on the methods page.
8values · Political values
Adapted from the 8values project under its MIT license. Questions, response presentation, and scoring are adapted; the source license does not establish psychometric validity.
Cognitive Reflection Test
Source: Frederick (2005), with CRT-2 items attributed to Thomson and Oppenheimer (2016). We have not verified an open license or explicit permission for this reproduction. Publication and attribution alone do not grant reuse rights.
Visual imagery questionnaire
Adapted from Marks (1973). We have not verified permission for this reproduction. The website uses adapted wording and response direction; we do not claim that it is the original administration or a diagnostic test.