Abstract
The effect of information provision on the risk perception of drinking water was investigated on the basis of information contents and the respondent's personality and socio-demographics. The respondents were divided into 11 groups and the combination of provided information was varied for each group. The effectiveness of information provision was observed as a decrease in the "unknown" score, while the "dread" score was increased in all the groups with information provision. Numerical information like the number of group infections and DALY itself showed no marked effect on risk perception; however, the recognition of the number of group infections showed an effect on risk perception. Larger risk perceptions and a larger effect of information provision were observed in the respondents who have personality traits like "recklessness" and willingness to actively accept risks.
