The current trend away from closed offices and cubicle walls and toward open office layouts has been gaining considerable momentum in recent years. The idea is that by knocking down the physical barriers, like walls put up between co-workers, employees will have more opportunity to start casual conversation with one another, thus fostering greater collaboration and innovation. But what about the introverts? People who identify themselves as introverts are at their most productive when they are in quiet spaces with as few distractions as possible. Introverts and extroverts can be just as productive as one another, but because they respond differently to different levels of stimulation, they need to work in different types of environments.