Stop signals are cues that indicate a need to halt or pause an action. In various contexts, such as traffic management, stop signs and traffic lights serve as visual signals to drivers, instructing them to stop for safety. In communication, stop signals can be verbal or non-verbal cues that suggest someone wants to end a conversation or change the topic. In psychology, stop signals are used in experiments to study impulse control and decision-making. For example, participants may be asked to respond to stimuli but must stop when they see a specific signal. This helps researchers understand how people process information and control their actions.