H5P WEBER’S LAW Weber’s Law is a principle in psychology that helps explain how we perceive changes in stimuli, such as light, sound, or weight.The “just noticeable difference” (JND) is the smallest detectable change (∆𝐼) in a stimulus (𝐼). The JND is the smallest detectable difference between two sensory inputs. For example, if you are holding a … Continue reading Module 3