In this study consists of the following two topics, one is a basic consideration on a structure of the decision making for a personal intention problems, and the other is classified to regard to the consciousness structure in general agreement formation for infrastructures construction problems. In the former study, the personal decision making scheme which have three importance pieces of concept “deciding”, “determine” and “decide”. In the latter one, in Western society, it is important to the independent for the decision making system in agreement formation. On the other hand, in the Japanese society, the continuation nature thinks are importance although it is decided as the one that decides. This paper is proposed to decide the social decision-making using from Cumulative Prospect Theory based on human impression.
