Washing Away Postdecisional Dissonance

@article{Lee2010WashingAP,
  title={Washing Away Postdecisional Dissonance},
  author={Spike W. S. Lee and Norbert Schwarz},
  journal={Science},
  year={2010},
  volume={328},
  pages={709 - 709}
}
The act of scrubbing clean one’s hands also removes the tendency to justify prior decisions. After choosing between two alternatives, people perceive the chosen alternative as more attractive and the rejected alternative as less attractive. This postdecisional dissonance effect was eliminated by cleaning one’s hands. Going beyond prior purification effects in the moral domain, physical cleansing seems to more generally remove past concerns, resulting in a metaphorical “clean slate” effect. 

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Materials and methods are available as supporting material on Science Online
    We thank the Center for Advanced Study in the Behavioral Sciences and the R. C. Lee Charitable Foundation for support