This paper studies responses to the 1999 Marmara Earthquake (Turkey) in which 18,000 people died, 50,000 people were injured, there were 5,000 building collapses and 340,000 damaged buildings, 14,513 businesses closed, 150,000 people became unemployed, and 129,338 were forced to live in prefabricated houses. This research is based on a survey comprising 500 interviews carried out a year after the earthquake. Responsible behavior as the dependent variable is statistically tested with several socio-demographic and attitude variables. The findings indicate social solidarity, knowledge, basic needs, desire for change and psychological status of the disaster survivors were all adversely affected. It was observed that education, employment, social security, knowledge and fatalism have varying impacts on responsible behavior related to preparedness for future earthquakes.