The Wall Street Journal reports on a recent study that asked whether more screen real estate gave workers the ability to do things faster and better. Workers were given either an 18-inch or 24-inch monitor, and the researchers found that:
People using the 24-inch screen completed the tasks 52% faster than people who used the 18-inch monitor; people who used the two 20-inch monitors were 44% faster than those with the 18-inch ones. There is an upper limit, however: Productivity dropped off again when people used a 26-inch screen.
Interesting findings (albeit funded by a monitor manufacturer)