After Hurricane Sandy devastated the US Atlantic coast the debate over climate change recaptured the public imagination. The record heat wave and drought across the United States in 2012 seems also to have convinced more people that global warming is a real phenomenon even though it makes little sense to attribute a single weather event―no matter how extreme―to an upward trend in temperature.
Research proves global warming exists and scientists typically point to results from independent studies and meta-analyses to try to sway people’s views. But people seem to rely on factors other than data to inform themselves about the likelihood of global warming. “Data cannot move people to imagine.” says professor Jane Risen. Her research Suggests that it is people’s ability to imagine the effects of global warming, not the statistics or data, that determine belief in global warming.
Risen and Clayton Critter propose in a recent paper that the physical experience of heat can make it easier for people to visualize a hot, arid world plagued by global warming. Moreover , having that vivid picture in mind can make the idea of a warming planet seem much more plausible.
Physical sensations of warmth, hunger, or thirst can influence people’s beliefs by helping them form clear mental images f a world where those sensations are more common. The results of the Study Suggest that ordinary people―including bright and educated ones―may think of global warming and other pressing environmental and social concerns in intuitive rather than intellectual ways. Scientists maybe more successful in communicating their findings about climate change if they make it easier for people to imagine the urgency and consequences of this issue.
In an experiment, Students were taken outside on different days and asked questions, one of which solicited the strength of their views on global warming. Risen and Critter found that students tended to believe more in global warming when it was hotter outside. Of course, their answers may have been related to factors other than their mental images of a hotter planet.Blistering heat outdoors could lead people to think that the earth’s average surface temperature is indeed rising. They may think it reasonable to infer that the global climate is changing, for getting that global warming actually entails a gradual elevation in the earth’s average temperature.
But even when Risen and Critter took the experiment indoors, they found that students who were asked to complete a survey in a cubicle that had been heated were more likely to believe in global warming. Furthermore, students were asked in another experiment [9](1.to what extent they felt the room was warm or cold before responding to the global warming question. Calling attention to the temperature in the room should have led students to “correct” their views if those had been unintentionally based on the room’s temperature. But the feeling of heat continued to have a significant impact on belief. These results Suggest that the experience of heat―rather than the information it conveyed―influenced how strongly the students felt about global warming. The actual physical experience of heat was more powerful than the.mere mention of it.
In another experiment, the authors found that exposing Students to sentences such as “the room is hot” or “the bacon is sizzling” successfully summoned the concept of heat but did not influence their beliefs in global warming.
Risen and Critter expanded their analysis to look at the effect of thirst on the belief in another environmental problem: drought and desertification. They had some participants eat pretzels to become thirsty, while they showed other participants a subliminal message about thirst―they flashed the word“thirst” on a computer screen for 17 milliseconds, and had a third group of participants complete a neutral task that was unrelated to thirst. They found that the students who physically experienced thirst were more likely to believe in the threat of desertification. Feeling thirsty led people to think about thirst more (as did the quickly flashed presentation of the word), but the actual physical experience was necessary to affect people’s views. “Jumping in the process midway, by activating the thought without having the physical experience, did not lead to a change in belief,” says Risen.
To test the idea that feeling warm leads people to form sharper mental images of a world becoming hotter Risen and Critcherused a new technique that measured how easily participants in a warm room imagined a picture of a hot landscape. Students who participated in this experiment were randomly assigned to heated or room-temperature cubicles. While in the cubicles, they were first shown a series of pictures on a computer screen that included hot and cold outdoor scenes. The hot scenes with yellow and red tones, showed parched landscapes that depicted the world as affected by global warming. Using Microsoft Office’s picture editing features the researchers had adjusted each image’s clarity so that the pictures were semitransparent and somewhat blurry.
In the next task, they showed the students these same images, but this time with the transparency set at the way to 100 percent, so they started off completely invisible. They asked the students to adjust the transparency of each photo until they matched the level of clarity of the photo that they had seen before. Participants stopped when the images in front of them matched the images they remembered.
Students who performed the experiment in the hot room made the images of hot landscapes appear shaper, while those who were in the room temperature room remembered the images being fuzzier. This result suggests that students who felt warm were able to form clearer mental images of a hot world. To further test the idea that mental images intensify a belief in global warming, Risen and Critter conducted another experiment in which students were shown otherwise identical landscape pictures that were either clear or blurry. They found that students who were shown clear images of hot landscapes were more likely to believe that the earth was heating up.
In all of these experiments, Risen and Critter found that regardless of participants’ political views, participants believed more in global warming when asked about their views in a warm environment. In other words, although political orientation predicted people’s beliefs on global warming (liberals were more likely than conservatives to believe in global warming), feeling warm still had a significant impact on their beliefs. Both liberals and conservatives were better able to imagine global warming occurring when they felt warm.
The fact that liberals and conservatives responded similarly in the experiments is in sharp contrast to the response people of ten have when presented with explicit claims about an issue. Previous studies have shown that after people are given mixed evidence about a topic, those who are inclined to favor a position will come to believe in it even more, while those who are skeptical will tend to become even more skeptical. Risen claims that trying to convince people of something by simply delivering facts can sometimes be polarizing because it gives people something to react to. The experience of heat seems to elicit a more universal intuitive response.
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