JND

English Noun s Just-noticeable difference, the amount by which something must be changed in order for it to be detectable at least 50% of the time. en Aleah's nosejob was not dramatic. It was more like a JND, around half her friends noticed it and the other half did not. en Introduction to Psychology 75 Lionel Nicholas 2009 The three laws of thresholds Weber's law states that, for a JND to be noticed, a constant ratio (relationship) exists between the intensity of a stimulus and the additional intensity required for a comparison to be made between the stimuli. Further reading Anagrams en djn D.N.J. NJD