Abstract
Many people passed away by the Great East Japan Earthquake which occurred on March 11, 2011. Especially, on the occasion of evacuation from tsunami with rare generating frequency, psychological factors affected in negative way. Although research on this problem has been done by social psychology researchers from a viewpoint of disaster psychology, the research which analyzed the individual psychological factors from the viewpoint of civil engineering technology is not found.
So, in this research, the case of a kindergarten which might not have realized the emergency of the tsunami and caused many victims, and the case of an elementary school in which illusion delays evacuation behavior were analyzed from a viewpoint of social psychology. Based on the three intentionalities of collectivity, achievement and autonomy developed by one of the authors, humans' original instincts and desires were used. Then the fundamental data for analysing future strategy of evacuation behavior were discussed.