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How presentation format affects the interpretation of probabilistic flood risk information

Strathie, A.; Netto, G.; Walker, G. H. and Pender, G. (2017). How presentation format affects the interpretation of probabilistic flood risk information. Journal of Flood Risk Management, 10(1) pp. 87–96.

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In many European countries, flood awareness information is communicated through flood extent maps and probabilistic language. However, research suggests that probabilistic information is difficult to understand and that presentation format affects understanding and risk perception. In this study, thirty participants took part in focus groups to explore responses to a flood extent map, and completed a questionnaire to measure the effect of expressing the probability of flooding using different language formats on understanding and risk perception. Responses to the flood extent map reveal participants experienced difficulties interpreting the probabilistic information. In the questionnaire, understanding was high across statements for both self-report and objective measures. However, the standard way of communicating risks, in terms of years per flooding event, evoked the lowest levels of understanding. For risk perception, there were differences in mean risk ratings across statements, and in general, people perceived the risk as greater when presented in terms of cumulative probability over a number of years than in terms of the probability of a single event. This suggests that by making alterations to the standard format used to communicate probabilistic flood risk information, it may be possible to increase understanding and awareness of the risks posed by flooding.

Item Type: Journal Item
Copyright Holders: 2015 The Chartered Institution of Water and Environmental Management (CIWEM) and John Wiley & Sons Ltd
ISSN: 1753-318X
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetCREW (Centre for Research in Water Expertise)
Keywords: risk; risk management
Academic Unit/School: Faculty of Arts and Social Sciences (FASS) > Psychology and Counselling > Psychology
Faculty of Arts and Social Sciences (FASS) > Psychology and Counselling
Faculty of Arts and Social Sciences (FASS)
Related URLs:
Item ID: 45329
Depositing User: Ailsa Strathie
Date Deposited: 01 Mar 2016 13:57
Last Modified: 06 Aug 2019 15:16
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