As you can see, in the math test men did a little worse as the temperature rose but women did way better. There were similar results in a verbal test. So the war of the thermostat is over: science has proven that we should turn the heat up. Hooray!
This is sort of an irresistible piece to write, but I’d like to point something out. I converted the original chart to Fahrenheit for my (mostly) American audience, and then I put a yellow box around the temperatures you’re actually likely to see in an office: around 66° to 78°. The rest of the chart is mostly nonsense, since this study is aimed at office workers and very few offices keep the temperature outside that range. Here’s what just that piece of the chart looks like, with all the trendlines removed:
If you run regression lines through the blue and red circles you’ll certainly get something, but it sure looks to me like it would be meaningless. The trend in the bigger chart seems to be driven almost entirely by the temperature extremes, which hardly anyone encounters in real life.
So as irresistible as it is, this study should probably be ignored. Maybe if they redo it with more samples restricted to reasonable ranges it would tell us something. Right now it doesn’t
POSTSCRIPT: I would like to declare my lack of personal bias in this matter by mentioning that I work at home and the thermostat isn’t an issue. Then again, when I worked in an office I never cared much about it either.