Abstract
The Extended Parallel Process Model (EPPM) was developed as a model to assist in the development of effective risk communication messages, specifically messages that elicit adaptive behavioral responses. It has shown to be effective in several settings invoking clearly delineated dangers (e.g., safety belt usage, condom usage).Unfortunately, communicating risk messages is not always so straightforward. One increasing concern in the risk communication field is the controversy over electromagnetic fields (EMFs) and the uncertain hazards they present to individuals. The purpose of this study is to test the EPPM with this unknown risk and to explore which type of risk message may motivate adaptive behavioral responses. In accordance with the EPPM model, 251 participants received either a low- or high-threat risk message and a list of control measures they could use to reduce their exposure to EMFs. Results suggest that the EPPM model can be extended to an unknown risk.
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