Under some circumstances, people may become more aggressive when they're overheated. But other decision-making doesn't seem to be affected.
Decades of research has shown that times of extreme heat are associated with both civil war and personal violence. Despite this consistent finding, there is controversy about why heat and violence go hand in hand. Is heat causing a cascading series of problems, such as crop failure, leading to civil unrest? Or does heat affect human decision-making directly?
"Given climate changes happening around the world, and changing temperatures, we felt this was an important line of inquiry," said Robert Pickmans, a doctoral student at the University of California, Berkeley, who co-authored the new research. The first finding was that, for the most part, there weren't a lot of differences. People in the hot rooms complained of feeling sleepier, but their decision-making abilities didn't slip.There was, however, an interesting result in one task, dubbed the"joy of destruction" task. In this test, participants got the opportunity to erase some of the savings of another participant.
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