The authors examined how community development schemes when more suitable information was presented and deepened understanding. The concept used was "design of experiments". Results demonstrated that factors determining subjective evaluation were social norms and individual benefit. When clarity of the schemes was low, simple schemes were considered as important. Consequently, the main factor of individual benefits increased. On the other hand, when clarity of the schemes was high, the person considered more difficult schemes as important. Consequently, the factor of social norms increased. Therefore, proper community planning should communicate information about both individual benefits and social norms to residents so that clear and precise decisions on the schemes can be made and supported by the residents themselves.
