I always found the Jonathan Haidt Moral Foundations work on the differences in the Moral Foundations of liberals and conservatives very useful. But I also had concerns that it missed some of the liberal moral concerns around Sanctity, Authority, Loyalty and didn’t include Gender Attitudes, and the very different takes on Caring and Justice. Now Jon Haidt’s work is research based rising out of intensive questioning of conservatives and liberals in many countries, here is my hypothesis of what the respective Moral Foundations of liberals and conservatives would be if research questions were a little different.
For the original Jonathan Haidt research see: http://www.moralfoundations.org/
Here’s my take on this: