Which term describes the smallest change in stimulus intensity that can be detected?

The correct term for describing the smallest change in stimulus intensity that can be detected is the just-noticeable difference. This concept, often abbreviated as JND, refers to the minimum amount by which a stimulus must be changed in order for a person to notice that a change has occurred. This threshold can vary depending on the initial intensity of the stimulus and is an essential aspect of understanding how we perceive differences in sensory information.

The just-noticeable difference is a crucial component in exploring how we process sensory information because it reflects our ability to detect changes in our environment. It’s closely related to Weber’s Law, which states that the just-noticeable difference is a constant proportion of the original stimulus intensity.

By understanding this concept, students can better grasp the nuances of sensation and perception, especially in how different stimuli can affect our sensory experiences. This knowledge is foundational in exploring various aspects of psychology that deal with human perception.