Glossary » feedback
a reaction to a behavior that has the potential to influence the original behavior. In other words, when a user does something, the computer responds so that the user has some understanding of how the computer interpreted the user’s action. When the user moves the mouse, the pointer moves on the screen. When the user types, the keys click. When the user selects an icon, it hilites. When the user selects a menu item, it flashes and some action takes place.
Without responsive and relevant feedback, users question whether their actions have been recognized and understood correctly.