It’s a dangerous fallacy to say that people perform better when they’re stressed, over-extended, or unhappy. We found just the opposite. People are more likely to come up with a creative idea or solve a tricky problem on a day when they are in a better mood than usual. In fact, they are more likely to be creative the next day, too, regardless of that next day’s mood. There’s a kind of “creativity carry-over” effect from feeling good at work.
Teresa Amabile talking about her book Do people work better when they are stressed?