The Enhancement of the Metaphorical Connection between Morality and Cleanliness and its Promotion on Prosocial Behavior: An Environment and Self Perspective

Experiment 1 showed that compared with the control group, the metaphorical connection between morality and environmental cleanliness was enhanced in the experimental group, but the score of prosocial behavior was not significantly improved. Experiment 2 showed that compared with the control group, the metaphorical connection between morality and self-cleanliness was enhanced in the experimental group, and the score of prosocial behavior was significantly improved. In addition, we found that compared with environmental cleanliness, the self-cleanliness group had a more significant effect on the promotion of prosocial behavior. Therefore, the enhancement of the metaphorical connection between morality and environment/self cleanliness is effective, and self cleanliness can promote prosocial behavior.