I watched this TED talk a few years ago but haven't seen anything since. I found it interesting though. QUOTE: What does a disgusting image have to do with how you vote? Equipped with surveys and experiments, psychologist David Pizarro demonstrates a correlation between your sensitivity to disgusting cues -- a photo of feces, an unpleasant odor -- and your own moral or political conservatism. https://www.ted.com/talks/david_pizarro_the_strange_politics_of_disgust?language=en Who are more disgusted by gross things, liberals or conservatives? Hint: my dear brother-in-law is very conservative and was so disgusted by his kids dirty diapers that he was not able to change them without gagging.