Two studies of the rationality of human behavior (ScienceDaily):
People are unconsciously fairer and more generous when they are in clean-smelling environments, according to a soon-to-be published study led by a Brigham Young University professor.
The research found a dramatic improvement in ethical behavior with just a few spritzes of citrus-scented Windex.
And from an article a year ago:
New research in Psychological Science, a journal of the Association for Psychological Science has found that the physical notion of cleanliness significantly reduces the severity of moral judgments, showing that intuition, rather than deliberate reasoning can influence our perception of what is right and wrong.
Lead researcher, Simone Schnall explains the relevance of the findings to everyday life; “When we exercise moral judgment, we believe we are making a conscious, rational decision, but this research shows that we are subconsciously influenced by how clean or ‘pure’ we feel.
“Take for example the situation of a jury member or voting in an election — if the jury member had washes their hands prior to delivering their verdict, they may judge the crime less harshly.
“Similarly, someone may find it easier to overlook a political misdemeanor had they performed an action that made them feel ‘clean’ prior to casting their vote.”