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Bridging Risk Communication and Health Literacy to Improve Health Outcomes Related to Heat  

Kristin VanderMolen and Benjamin Hatchett

Extreme heat, whether occurring as single or multiple anomalously hot days and nights, poses direct and indirect impacts to human health and to built and natural systems. Direct impacts include heat-related illnesses (e.g., heat cramps, heat exhaustion, heatstroke) and mortality. Indirect impacts include exacerbations of other hazards, like drought and wildfire, as well as stressors like air pollution. Adaptation to extreme heat can take many forms, such as in behavioral, institutional, infrastructural, technological, and ecosystem-based change. It can also take place on varying levels or spatial scales, requiring different resources and time frames to implement. Given that heat-related illnesses and mortality are often preventable when people are able to take protective action, one potentially near-term, relatively cost-efficient, and effective adaptation is to successfully inform the public about heat risk. This requires not only communicating with the public about heat risk when it is imminent (i.e., institutional adaptation), but also educating the public about heat risk such that it can interpret and make use of the messaging received (i.e., behavioral adaptation). The field of risk communication offers recommendations and guidance that can help inform heat risk communication, for example related to warning source and channel as well as to message purpose, content, and style. Similarly, the field of health literacy, and in particular the newly conceptualized “climate and health literacy,” offer proposed pathways that can be leveraged to help educate the public about heat risk. Bridging these two fields and the actors (or practitioners) within them therefore promises to be fruitful in the reduction of heat-related morbidity and mortality and in improving overall health outcomes in vulnerable populations across the globe. Critically, however, to be effective, both risk communication and climate and health literacy must be designed with direct knowledge of and engagement with target audiences. Accordingly, actors within these fields should collaborate not only with one another but also with the specific audiences they intend to serve.


Fatalism, Causal Reasoning, and Natural Hazards  

John McClure

Fatalism about natural disasters hinders action to prepare for those disasters, and overcoming this fatalism is one key element to preparing people for these disasters. Research by Bostrom and colleagues shows that failure to act often reflects gaps and misconceptions in citizen’s mental models of disasters. Research by McClure and colleagues shows that fatalistic attitudes reflect people’s attributing damage to uncontrollable natural causes rather than controllable human actions, such as preparation. Research shows which precise features of risk communications lead people to see damage as preventable and to attribute damage to controllable human actions. Messages that enhance the accuracy of mental models of disasters by including human factors recognized by experts lead to increased preparedness. Effective messages also communicate that major damage in disasters is often distinctive and reflects controllable causes. These messages underpin causal judgments that reduce fatalism and enhance preparation. Many of these messages are not only beneficial but also newsworthy. Messages that are logically equivalent but are differently framed have varying effects on risk judgments and preparedness. The causes of harm in disasters are often contested, because they often imply human responsibility for the outcomes and entail significant cost.