Abstract
Baseline rankings of warning messages according to their levels of perceived hazardousness were determined in order to study the interactions among the number, order, and criticality of warning messages in a systematic fashion. Thirty-three warning messages normally appearing on consumer products were rated and then ranked according to an odds ratio analysis. The order in which warning messages were presented was randomized to observe the effect of presentation order on hazard ratings of the messages. It was found that, for certain messages, very different hazard perceptions were observed for different survey versions, indicating an effect of order of presentation for these messages.
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