Washing Hands Makes Tough Choices Easier. Washing is both literally and figuratively cleansing, suggesting that sensory experiences often reflect abstract feelings. * Physical washing can cleanse the mind from the psychological baggage of making decisions. * Schools, workplaces, and cities might see better behavior if they make themselves cleaner. Pizza or Chinese? Side streets or the highway? Coffee or a nap? Every day we make hundreds of decisions. And with each one, the mind works hard to convince itself that it made the right choice. Now, scientists report that when people wash their hands immediately after making a decision, they are less likely to rationalize its merits — possibly making them less content with the decision but more objective about the option they rejected. While the finding doesn’t necessarily offer any obvious practical advice, it adds to a growing body of evidence that washing is both literally and figuratively cleansing and that
sensory experiences often reflect abstract feelings. “There is a really clear psychological connection between feeling morally clean and physically clean, and between feeling morally dirty and physically dirty,” said Spike Lee, a doctoral student in social psychology at the University of Michigan, Ann Arbor. His new study appeared today in the journal Science. “Now, we’re expanding the scope of the metaphor to mean wiping the slate clean,” he said. “We’re saying that things in the past can be washed away and you can start something afresh. I think this might have pervasive implications about how we live our daily lives.” The English language is full of metaphors that are starting to pan out in science. For example, people actually feel physically colder when given a cold shoulder or an icy stare, said Katie Liljenquist, a social psychologist at Brigham Young University in Provo, Utah. Likewise, the concept of moral cleansing through physical washing spans centuries, religions and works of literature — from ritual baptisms to Lady Macbeth’s attempts to wash away the guilt of murder with some water and the cry: “Out, damned spot!” In her work, Liljenquist has
found that being in a clean environment makes people more likely to behave ethically and generously. Her studies also show that using an antiseptic wipe absolves people of some moral guilt and that the simple act of cleaning gives people a sense of control, liberation and clarity of mind. Lee wondered how washing might affect other brain processes, including the concept of cognitive dissonance, in which we make ourselves feel better by focusing on the positives of our selected choices and dwelling on the negatives of our rejected ones. In one experiment, which was disguised as a consumer survey, 40 college students made a top-10 list of CDs and were then allowed to choose between their fifth and sixth-ranked choices and keep the one they chose. Immediately, they were given a task that had them evaluate soap by either looking at it or washing their hands with it. Finally, they re-ranked the CDs. The typical pattern in a scenario like this is for people to rank their selected choice higher in the second round and their rejected choice lower. The behavior is a sign that they’ve rationalized their choice to themselves, and students who only looked at soap followed the trend. Those who had scrubbed their hands, however, re-ranked the CDs in the same positions as they had the first time around. A second experiment with fruit
jams showed the same pattern. In essence, Lee proposes, washing your hands is like wiping your brain’s slate clean from residual psychological processes, including the act of justifying decisions. While the cleansing act might leave you less satisfied with your ultimate choice, it could make you a more rational decision-maker and more willing to recognize the negative consequences of your decision. Instead of blindly loving the car you bought or the vacation you chose to go on, for example, you might notice your choice’s flaws and use the experience to pick something different next time. The study doesn’t offer any immediate advice for how to incorporate hand washing into the decision-making process or whether casually offered antiseptic wipes might help you convince your spouse to do what you want. Instead, it offers insights into the complexities of our minds. It also suggests that schools, workplaces, even cities might elicit better behavior by encouraging cleanliness. “This is just one single study, but I think it has potential implications for broader psychological liberation,” Liljenquist said. “If people are experiencing a mental clean slate when they engage in physical cleaning, it’s possible that a physically clean environment could make them more prepared to learn and digest new information.” news from news.discovery.com
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