AI said:Liberals do have SOME of those other moral foundations, they're just not as strong as Care and Fairness. I'd be interested in seeing a breakdown of the extremes.
Yeah, it's not a clean fit. Haidt points out that Purity, for example, is also high for liberals, just not in the same way(s) as for conservatives. The example he gave was the liberal-led charge for 'organic, healthy foods'. On the Authority taste-bud, consider that while liberals may say they disregard it in moral consideration, in actuality they revere it - a certain form of it anyway. Look how easily they're swayed by 'the intelligence community' against Trump, for example. On Sanctity, they may have killed God as He was once conceived, but in a sense they have replaced Him with an artificial simulacrum: the religion of Science, Global Warming, etc.
Qualitative, rather than quantitative, differences may be the key.