Yes, it’s news from pre-1964, and proven in 2000. If you want to make your team more productive, consider a war room:
Teams of workers that labored together for several months in specially designed "war rooms" were twice as productive as their counterparts working in traditional office arrangements, a study by University of Michigan researchers has found. Results of the study will be presented Dec. 6 at the Association for Computing Machinery 2000 Conference on Computer Supported Cooperative Work.
A war room is also hypothesized, but not definitively shown, to reduce fighting… depending on the breaks.