Do colder temperatures make you less productive?

This final note today, which I offer against my own self-interest because I like my office to be cooler than most.

But a study from Cornell University I saw in Fast Company magazine says that when office temperatures are low — 68 degrees, specifically — people comittted 44 percent more mistakes and were half as productive as they were when the thermostat was set at 77.

To which my uncharitable answer is, put on a sweater.