Final answer:
A simple reaction time task involves responding promptly to a target on a screen without having to make complex decisions.
Step-by-step explanation:
Performing a response as soon as you see a target on a screen is known as a simple reaction time task. This type of task requires you to respond quickly to a single stimulus without having to make any complex decisions. Reaction time tasks are commonly used to measure the speed at which an individual can perceive and respond to a stimulus. These types of tasks can provide information about a person's sensory and motor performance capabilities. In contrast, a choice reaction time task would involve having to make a decision between multiple stimuli before responding.