Abstract
We are faced with many "Tragedy of Commons" problems in the community level as water pollution, garbage-disposal, and drought. To plan community system to solve commons crisis, the characteristics of consumer's coping process must be understood. In case of drought, three categories of consumers began to take water conservation from the different evaluation of individual-benefits;convenience, econmy, and cleanness, at the different sequential stages;normal water supply, recommendation of conservation, and suspension of water supply. In case of toiletpaper hoarding panic, three categories of consumers took hoarding-action from the different motives;self-reward maximization and self-defence, at the different sequential stages;precursor, outbreak, expansion of panic.
