Engineering psychology is about figuring out how people interact with technology or machines. Just like how grown-ups need to learn how to drive a car before they can drive well, people who study engineering psychology help make technology that is easy for the rest of us to use without getting confused or frustrated. They use science to figure out what colors, sounds, and shapes our brains like best, and how to put buttons, screens, and knobs in the right place so we can use them, even if we don't know what all the words mean. Engineering psychology helps make things work better for humans, so we can all be happier and more productive when we use technology.