Chocolate at work, paired with videos of stand-up comedy, increases productivity at work by 10 to 12 percent. That’s the word from economists at the University of Warwick.
A study looked at 700 employees in England. One group was given chocolate or fruit, or watched comedy videos before starting a math test.
The other group was shown a placebo video and given no food.
The researchers found that the first group did better overall. On average, they answered two more questions correctly than the second group.
Follow-up tests showed the reverse is true as well, finding that subjects who recalled recent tragedies in their lives were less productive.
Bottom line: unhappy workers aren’t as productive as happy ones—and might not perform at the same level or as well.