Adam Grant, an organizational psychologist at the Wharton School of the University of Pennsylvania, recently spoke at The Wall Street Journal’s CEO Council Summit, where he offered his take on the four-day workweek, writes Chip Cutter for The Wall Street Journal.

Grant said that executives who are looking to boost their teams’ productivity may want to consider cutting one day of work from the week. The move could increase employee wellbeing and improve the overall pace of work within companies.

He added that most of the companies that ran pilots of four-day weeks found that their performance either improved or was sustained. At the same time, employees became more focused.

“If I were a leader, I would be much more excited about 32 focused hours a week than I would 40 distracted hours,” said Grant.

In addition, shorter weeks could represent a competitive advantage for employers that would boost employee retention.

“I don’t know if this is going to be mass adopted,” he said. “It’s the kind of experimentation that allows people to learn a lot, and I think that often you are surprised.”

Read more about the four-day workweek argument in The Wall Street Journal.