The psychology of space plays a decisive role in how people feel, think, and act in a building. Good design does more than create a nice look—it helps shape comfort, mood, and even behavior. When space is planned with care, it supports focus, connection, calm, or energy, depending on what the space is meant to do. Understanding how design impacts occupant experience is key to making spaces that genuinely work for the people who use them, as noted by Perry Greene.