Credits & Attributions

All tests on TypologyQuiz are based on published, peer-reviewed instruments. We are grateful to the researchers who made these tools freely available.

8values - Political Values Test

Forked from github.com/8values/8values.github.io under the MIT license. Questions adapted to 5-point Likert format for one-per-screen delivery.

Mini-IPIP - Big Five Personality

Items from the International Personality Item Pool (IPIP). Public domain. ipip.ori.org

Cognitive Reflection Test (CRT + CRT-2)

Frederick, S. (2005). Cognitive Reflection and Decision Making. Journal of Economic Perspectives, 19(4), 25-42. CRT-2 items from Thomson & Oppenheimer (2016).

VVIQ - Vividness of Visual Imagery Questionnaire

Marks, D. F. (1973). Visual imagery differences in the recall of pictures. British Journal of Psychology, 64(1), 17-24.

License

All test content is used under their respective open licenses (MIT, public domain, or academic fair use with attribution). TypologyQuiz itself is free and open. No test data is stored on our servers.