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
Consider buying Creating Surveys to help with your projects.
Available on AMAZON in multiple countries
Graham, J., & Haidt, J. (2010). Beyond beliefs: Religions bind individuals into moral communities. Personality and Social Psychology Review, 14, 140–150. doi: 10.1177/1088868309353415
Graham, J., Haidt, J., & Nosek, B. A. (2009). Liberals and conservatives rely on different sets of moral foundations. Journal of Personality and Social Psychology, 96, 1029-1046. doi:10.1037/a0015141
Graham, J., Nosek, B. A., & Haidt, J. (2012). The moral stereotypes of liberals and conservatives: Exaggeration of differences across the political spectrum. PLoS ONE, 7(12), e50092. http://doi.org/10.1371/journal.pone.0050092
Graham, J., Nosek, B. A., Haidt, J., Iyer, R., Koleva, S., & Ditto, P. H. (2011). Mapping the moral domain. Journal of Personality and Social Psychology, 101, 366-385. doi:10.1037/a0021847
Haidt, J. (2001). The emotional dog and its rational tail: A social intuitionist approach to moral judgment. Psychological Review, 108, 814–834. doi:10.1037//0033-295x.108.4.814
Haidt, J. (2012). The righteous mind: Why good people are divided by politics and religion. New York: Pantheon.
Haidt, J., & Graham, J. (2007). When morality opposes justice: Conservatives have moral intuitions that liberals may not recognize. Social Justice Research, 20, 98-116. doi:10.1007/s11211-007-0034-z
Haidt, J., & Joseph, C. (2004). Intuitive ethics: How innately prepared intuitions generate culturally variable virtues. Daedalus: Special Issue on Human Nature, 133(4), 55–66. doi:10.1162/0011526042365555
Iyer, R., Koleva, S., Graham, J., Ditto, P., & Haidt, J. (2012). Understanding Libertarian morality: The psychological dispositions of self-identified Libertarians. Plos One, 7(8): e42366. doi: 10.1371/journal.pone.0042366
Johnson, K. A., Hook, J. N., Davis, D. E., Van Tongeren, D. R., Sandage, S. J., & Crabtree, S. A. (2016). Moral foundation priorities reflect U.S. Christians’ individual differences in religiosity. Personality and Individual Differences. doi: 10.1016/j.paid.2015.12.037.