Flooding Risks: A Comparison of Lay People's Perceptions and Expert's Assessments in Switzerland
- 1 August 2006
- journal article
- Published by Wiley in Risk Analysis
- Vol. 26 (4), 971-979
- https://doi.org/10.1111/j.1539-6924.2006.00792.x
Abstract
Experts on the risk of flooding have developed very detailed maps for different parts of Switzerland that indicate the types of damage possible and the probabilities of adverse events. Four categories of risk severity are defined on the maps, ranging from high risk to no risk. Based on these existing maps, we selected respondents for a mail survey, some from areas high in risk and others from low-risk regions. Respondents answered several questions related to flood risk perception and preparedness. Survey results showed that respondents' risk perceptions were correlated with the experts' risk assessments. Respondents who lived in areas designated "no risk" by the experts had lower perceptions of risk than respondents who lived in areas with higher levels of designated risk. With regard to concrete prevention behavior, no differences between people living in different risk areas were observed. Survey results further suggest that many inhabitants do not know that flooding maps exist for their region. Results suggest that in some regions people overestimate the risks associated with flooding. Consequently, some people are more afraid of flooding than is justified by the facts. Some people show prevention behavior that most likely is superfluous. However, in other regions people underestimate the risks associated with flooding. These people do not show prevention behavior, and they are not well prepared for an adverse event. Furthermore, results suggest that respondents' experiences with flooding are positively related to their perceptions of flood risk. Findings of the present study are in line with the availability heuristic.Keywords
This publication has 29 references indexed in Scilit:
- Flood loss reduction of private households due to building precautionary measures – lessons learned from the Elbe flood in August 2002Natural Hazards and Earth System Sciences, 2005
- Aviation Risk Perception: A Comparison Between Experts and NovicesRisk Analysis, 2004
- Risk as Analysis and Risk as Feelings: Some Thoughts about Affect, Reason, Risk, and RationalityRisk Analysis, 2004
- Fear or money? Decisions on insuring oneself against floodRisk Decision and Policy, 2002
- Public involvement in flood risk management in HungaryJournal of Risk Research, 2002
- Public Perception of the Risks of Floods: Implications for CommunicationRisk Analysis, 1991
- Effects of personal experience on self-protective behavior.Psychological Bulletin, 1989
- Response to Earthquake HazardEnvironment and Behavior, 1981
- Flood Insurance: Some Determinants of AdoptionEconomic Geography, 1978