Abstract
Recently neighborhood associations for community-based disaster prevention activity are expected to drive risk communication among community members, aiming at eliminating risk-perception gap. This study formulates a game theoretical model to investigate a communication process in a neighborhood association for community-based disaster prevention activity, and illustrates that the activity guided with manuals may not be accompanied by animated risk communication, that is followed by implication that risk communication is likely to be more implementable in case it is independent of the activity. Moreover the study exhibits larger implementability of risk communication in the case that the activity level is determined by the members in the association.