The MFQ evaluates moral foundations based on answers to questions. There are five moral foundations in the MFQ:
Equality-Fairness; aka fairness/cheating
Authority-Respect; aka Authority/subversion
Purity-Sanctity aka Sanctity/degradation
I added the aka because you will find somewhat different words in some articles.
See this page for a description of the five core foundations https://www.moralfoundations.org/
Researchers can use the MFQ items to create their own surveys.
The current version (2018) is a 30-item version known as the MFQ30. There is also a shorter version known as the MFQ20, which has 20 items, 4-items for each of the 5 core moral foundations.
The MFQ is available in multiple languages.
Where to get the MFQ: https://www.moralfoundations.org/questionnaires
Haidt and his colleagues have added a sixth foundation to assess liberty. There are two subscales to this foundation.
Where to get the Liberty Scale Items:
See the Appendix at the end of the Iyer et al. article on Plos One:
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